Update GH actions versions

Author: patch0

.github/workflows/build_publish.yml

@@ -13,7 +13,7 @@ jobs:
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/rails_6.1.gemfile
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
@@ -25,7 +25,7 @@ jobs:
 
     - name: Archive coverage
       if: success()
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: gem-pkg
         path: pkg/*.gem
@@ -45,7 +45,7 @@ jobs:
       with:
         ruby-version: '3.2'
 
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
       with:
         name: gem-pkg
         path: pkg/