chore(deps): bump jwcrypto from 1.5.0 to 1.5.1 in /kms/snippets (GoogleCloudPlatform#11071)

Bumps [jwcrypto](https://github.com/latchset/jwcrypto) from 1.5.0 to 1.5.1.
- [Release notes](https://github.com/latchset/jwcrypto/releases)
- [Commits](latchset/jwcrypto@v1.5.0...v1.5.1)

---
updated-dependencies:
- dependency-name: jwcrypto
  dependency-type: direct:production
...

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

Author: dependabot[bot]

kms/snippets/requirements.txt

@@ -1,4 +1,4 @@
 google-cloud-kms==2.19.1
 cryptography==41.0.6
 crcmod==1.7
-jwcrypto==1.5.0
+jwcrypto==1.5.1