Bump actions/cache from 4 to 5

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](https://github.com/actions/cache/compare/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] <support@github.com>

.github/workflows/ci-windows.yml

@@ -32,7 +32,7 @@ jobs:
           version: 1.66.0
 
       - name: Try to restore libraries from the cache
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: library-cache
         with:
           key: conan-${{ hashFiles('src/win32/conanfile.txt') }}
@@ -44,7 +44,7 @@ jobs:
 
       - name: Save libraries to the cache
         if: ${{ steps.library-cache.outputs.cache-hit != 'true' }}
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           key:  ${{ steps.library-cache.outputs.cache-primary-key }}
           path: ${{ env.CONAN_USER_HOME }}/.conan