Adjust publish workflow to new tooling versions

Author: bkis

.github/workflows/build-jekyll.yml

@@ -15,9 +15,9 @@ jobs:
       - uses: actions/cache@v4
         with:
           path: vendor/bundle
-          key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
+          key: ${{ runner.os }}-cache-${{ hashFiles('**/cache.key') }}
           restore-keys: |
-            ${{ runner.os }}-gems-
+            ${{ runner.os }}-cache-
 
       - uses: jeffreytse/jekyll-deploy-action@v0.6.0
         with:
@@ -28,7 +28,7 @@ jobs:
           jekyll_src: './'           # Default is root directory
           jekyll_cfg: '_config.yml'  # Default is _config.yml
           jekyll_baseurl: ''         # Default is according to _config.yml
-          bundler_ver: '>=0'         # Default is latest bundler version
+          bundler_ver: ''            # Default is latest bundler version
           cname: ''                  # Default is to not use a cname
           actor: ''                  # Default is the GITHUB_ACTOR
           pre_build_commands: ''     # Installing additional dependencies (Arch Linux)