github-actions: bump aws-actions/configure-aws-credentials from 4 to 6

Bumps [aws-actions/configure-aws-credentials](https://github.com/aws-actions/configure-aws-credentials) from 4 to 6.
- [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...v6)

---
updated-dependencies:
- dependency-name: aws-actions/configure-aws-credentials
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docker-riverproui.yaml

@@ -59,7 +59,7 @@ jobs:
           ref: ${{ inputs.ref || github.ref }}
 
       - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@v6
         with:
           role-to-assume: ${{ env.ECR_ROLE_ARN }}
           aws-region: ${{ env.ECR_REGION }}
@@ -160,7 +160,7 @@ jobs:
         uses: sigstore/cosign-installer@v3
 
       - name: Configure AWS Credentials
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@v6
         with:
           role-to-assume: ${{ env.ECR_ROLE_ARN }}
           aws-region: ${{ env.ECR_REGION }}