chore(deps): bump actions/upload-artifact from 6 to 7 (aws#8709)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/integration-tests.yml

@@ -411,7 +411,7 @@ jobs:
 
       - name: Upload test results
         if: always()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: test-results-${{ matrix.test_suite }}
           path: TEST_REPORT-*.json

.github/workflows/validate_pyinstaller.yml

@@ -32,7 +32,7 @@ jobs:
           sudo ./sam-installation/install
           sam-beta --version
           ./tests/sanity-check.sh
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: pyinstaller-linux-zip
           path: .build/output/aws-sam-cli-linux-x86_64.zip
@@ -61,7 +61,7 @@ jobs:
           sudo ./sam-installation/install
           sam-beta --version
           ./tests/sanity-check.sh
-      - uses: actions/upload-artifact@v6
+      - uses: actions/upload-artifact@v7
         with:
           name: pyinstaller-macos-zip
           path: .build/output/aws-sam-cli-macos-x86_64.zip