ci: bump aws-actions/configure-aws-credentials from 4 to 5 (strands-agents#795)

Bumps [aws-actions/configure-aws-credentials](https://github.com/aws-actions/configure-aws-credentials) from 4 to 5.
- [Release notes](https://github.com/aws-actions/configure-aws-credentials/releases)
- [Changelog](https://github.com/aws-actions/configure-aws-credentials/blob/main/CHANGELOG.md)
- [Commits](aws-actions/configure-aws-credentials@v4...v5)

---
updated-dependencies:
- dependency-name: aws-actions/configure-aws-credentials
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

.github/workflows/integration-test.yml

@@ -46,7 +46,7 @@ jobs:
       contents: read
     steps:
       - name: Configure Credentials
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@v5
         with:
          role-to-assume: ${{ secrets.STRANDS_INTEG_TEST_ROLE }}
          aws-region: us-east-1