chore(deps): update python to v1.42.21 (#165)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [boto3](https://redirect.github.com/boto/boto3) | `==1.42.17` →
`==1.42.21` |
![age](https://developer.mend.io/api/mc/badges/age/pypi/boto3/1.42.21?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/boto3/1.42.17/1.42.21?slim=true)
|
| [botocore](https://redirect.github.com/boto/botocore) | `==1.42.17` →
`==1.42.21` |
![age](https://developer.mend.io/api/mc/badges/age/pypi/botocore/1.42.21?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/botocore/1.42.17/1.42.21?slim=true)
|

---

### Release Notes

<details>
<summary>boto/boto3 (boto3)</summary>

###
[`v1.42.21`](https://redirect.github.com/boto/boto3/blob/HEAD/CHANGELOG.rst#14221)

[Compare
Source](https://redirect.github.com/boto/boto3/compare/1.42.20...1.42.21)

\=======

- bugfix:`s3`: \[`botocore`] Clarify `payload_signing_enabled`
documentation to cover interaction with `request_checksum_calculation`

###
[`v1.42.20`](https://redirect.github.com/boto/boto3/blob/HEAD/CHANGELOG.rst#14220)

[Compare
Source](https://redirect.github.com/boto/boto3/compare/1.42.19...1.42.20)

\=======

- api-change:`cleanrooms`: \[`botocore`] Added support for publishing
detailed metrics to CloudWatch for operational monitoring of
collaborations, including query performance and resource utilization.
- api-change:`identitystore`: \[`botocore`] This change introduces
"Roles" attribute for User entities supported by AWS Identity Store SDK.

###
[`v1.42.19`](https://redirect.github.com/boto/boto3/blob/HEAD/CHANGELOG.rst#14219)

[Compare
Source](https://redirect.github.com/boto/boto3/compare/1.42.18...1.42.19)

\=======

- api-change:`connect`: \[`botocore`] Adds support for searching global
contacts using the ActiveRegions filter, and pagination support for
ListSecurityProfileFlowModules and ListEntitySecurityProfiles.
- api-change:`endpoint-rules`: \[`botocore`] Update endpoint-rules
client to latest version
- api-change:`kafkaconnect`: \[`botocore`] This change sets the
KafkaConnect GovCloud FIPS and FIPS DualStack endpoints to use
kafkaconnect instead of kafkaconnect-fips as the service name. This is
done to match the Kafka endpoints.

###
[`v1.42.18`](https://redirect.github.com/boto/boto3/blob/HEAD/CHANGELOG.rst#14218)

[Compare
Source](https://redirect.github.com/boto/boto3/compare/1.42.17...1.42.18)

\=======

- api-change:`connect`: \[`botocore`] Changes for Contact for Global
Search
- api-change:`elastictranscoder`: \[`botocore`] The elastictranscoder
client has been removed following the deprecation of the service.
- api-change:`quicksight`: \[`botocore`] This release adds support for
quick users to be able to perform role upgrades on their own.
Additionally it allows admins to make this feature admin or auto
approval along with new self upgrade capability that can be restricted
by Admins.

</details>

<details>
<summary>boto/botocore (botocore)</summary>

###
[`v1.42.21`](https://redirect.github.com/boto/botocore/blob/HEAD/CHANGELOG.rst#14221)

[Compare
Source](https://redirect.github.com/boto/botocore/compare/1.42.20...1.42.21)

\=======

- bugfix:`s3`: Clarify `payload_signing_enabled` documentation to cover
interaction with `request_checksum_calculation`

###
[`v1.42.20`](https://redirect.github.com/boto/botocore/blob/HEAD/CHANGELOG.rst#14220)

[Compare
Source](https://redirect.github.com/boto/botocore/compare/1.42.19...1.42.20)

\=======

- api-change:`cleanrooms`: Added support for publishing detailed metrics
to CloudWatch for operational monitoring of collaborations, including
query performance and resource utilization.
- api-change:`identitystore`: This change introduces "Roles" attribute
for User entities supported by AWS Identity Store SDK.

###
[`v1.42.19`](https://redirect.github.com/boto/botocore/blob/HEAD/CHANGELOG.rst#14219)

[Compare
Source](https://redirect.github.com/boto/botocore/compare/1.42.18...1.42.19)

\=======

- api-change:`connect`: Adds support for searching global contacts using
the ActiveRegions filter, and pagination support for
ListSecurityProfileFlowModules and ListEntitySecurityProfiles.
- api-change:`endpoint-rules`: Update endpoint-rules client to latest
version
- api-change:`kafkaconnect`: This change sets the KafkaConnect GovCloud
FIPS and FIPS DualStack endpoints to use kafkaconnect instead of
kafkaconnect-fips as the service name. This is done to match the Kafka
endpoints.

###
[`v1.42.18`](https://redirect.github.com/boto/botocore/blob/HEAD/CHANGELOG.rst#14218)

[Compare
Source](https://redirect.github.com/boto/botocore/compare/1.42.17...1.42.18)

\=======

- api-change:`connect`: Changes for Contact for Global Search
- api-change:`elastictranscoder`: The elastictranscoder client has been
removed following the deprecation of the service.
- api-change:`quicksight`: This release adds support for quick users to
be able to perform role upgrades on their own. Additionally it allows
admins to make this feature admin or auto approval along with new self
upgrade capability that can be restricted by Admins.

</details>

---

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resources/requirements.txt

@@ -1,5 +1,5 @@
-boto3==1.42.17
-botocore==1.42.17
+boto3==1.42.21
+botocore==1.42.21
 certifi==2025.11.12
 chardet==5.2.0
 click==8.3.1