build(deps): update boto3 requirement from >=1.43.7 to >=1.43.8 in /python/cluster_management (#1107)

Updates the requirements on [boto3](https://github.com/boto/boto3) to
permit the latest version.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/boto/boto3/commit/7a82579873d86998d560b8d06b3564c743918cd8"><code>7a82579</code></a>
Merge branch 'release-1.43.8'</li>
<li><a
href="https://github.com/boto/boto3/commit/06a1d63a58620d394cc26a5e8582ed67eed3cb62"><code>06a1d63</code></a>
Bumping version to 1.43.8</li>
<li><a
href="https://github.com/boto/boto3/commit/2b6e7bd9d0d24c20f02df91f161ef2214fb53628"><code>2b6e7bd</code></a>
Add changelog entries from botocore</li>
<li><a
href="https://github.com/boto/boto3/commit/05566d2cd7e3d191a37a663c842eb849418ae7e9"><code>05566d2</code></a>
Merge branch 'release-1.43.7' into develop</li>
<li>See full diff in <a
href="https://github.com/boto/boto3/compare/1.43.7...1.43.8">compare
view</a></li>
</ul>
</details>
<br />


Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

python/cluster_management/requirements.txt

@@ -1,3 +1,3 @@
-boto3>=1.43.7
+boto3>=1.43.8
 botocore>=1.43.7
 pytest>=9.0.3