Bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [aws-actions/configure-aws-credentials](https://github.com/aws-actions/configure-aws-credentials).


Updates `actions/checkout` from 4 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

Updates `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: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: aws-actions/configure-aws-credentials
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/security-review.yml

@@ -15,7 +15,7 @@ jobs:
     outputs:
       approval-env: ${{ steps.authorization.outputs.approval-env }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Check authorization
         id: authorization
         uses: ./.github/actions/check-authorization
@@ -29,12 +29,12 @@ jobs:
       contents: read
       statuses: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Get AWS credentials
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@v6
         with:
           role-to-assume: arn:aws:iam::547182295936:role/SecurityReview-GitHubOIDCRole #TODO: migrate to production account
           role-session-name: ${{ github.run_id }}-${{ github.run_attempt }}