build(deps): Bump actions/cache from 4 to 5 (#353)

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

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

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

Author: dependabot[bot]

.github/workflows/e2e.yml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Cache Package
         id: cache-package
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ env.PACKAGE_DIR }}
           key: modctl-test-packages
@@ -90,7 +90,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Cache model
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: cache-model
         with:
           path: ${{ env.MODEL_DIR }}