Bump actions/cache from 4 to 5 (#656)

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/preview.yml

@@ -29,7 +29,7 @@ jobs:
         uses: ./.github/actions/render
 
       - name: Cache NPM
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -47,7 +47,7 @@ jobs:
           rm -fr build
 
       - name: Cache gems
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: vendor/bundle
           key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}

.github/workflows/release.yml

@@ -57,7 +57,7 @@ jobs:
         run: |
           curl -sL https://github.com/dita-ot/org.dita-ot.html/archive/refs/heads/${{ env.WEBSITE_PLUGIN_BRANCH }}.zip -o org.dita-ot.html.zip
       - name: Cache render DITA-OT
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: dita-ot-${{ env.DITA_OT_VERSION }}
           key: ${{ runner.os }}-dita-ot-${{ env.DITA_OT_VERSION }}