bump crc-fast to 1.9 (#4474)

## Description
<!--- Describe your changes in detail -->
Bump to latest `crc-fast` compatible with our MSRV (1.88). 


## Checklist
<!--- If a checkbox below is not applicable, then please DELETE it
rather than leaving it unchecked -->
- [x] For changes to the smithy-rs codegen or runtime crates, I have
created a changelog entry Markdown file in the `.changelog` directory,
specifying "client," "server," or both in the `applies_to` key.
- [x] For changes to the AWS SDK, generated SDK code, or SDK runtime
crates, I have created a changelog entry Markdown file in the
`.changelog` directory, specifying "aws-sdk-rust" in the `applies_to`
key.

----

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choice._

Author: aajtodd

.changelog/1768244447.md

@@ -0,0 +1,12 @@
+---
+applies_to:
+- client
+- aws-sdk-rust
+authors:
+- aajtodd
+references: []
+breaking: false
+new_feature: false
+bug_fix: false
+---
+Update crc-fast to 1.9