Update dependency ruby to v2.7.8

Author: renovate[bot]

.github/workflows/pr_tests.yml

@@ -38,7 +38,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1  # ruby/setup-ruby@ec106b438a1ff6ff109590de34ddc62c540232e0
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - run: "bundle exec rake syntax"
 
@@ -50,7 +50,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - run: "bundle exec rake lint"
       - run: "bundle exec rake metadata_lint"
@@ -64,7 +64,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - run: |
           bundle show
@@ -78,7 +78,7 @@ jobs:
       - name: 'Install Ruby 2.7'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - run: bundle exec rake check:dot_underscore
       - run: bundle exec rake check:test_file
@@ -91,7 +91,7 @@ jobs:
       - name: 'Install Ruby 2.7'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - name: 'Tags and changelogs'
         run: |

.github/workflows/tag_deploy.yml

@@ -55,7 +55,7 @@ jobs:
           clean: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - run: bundle exec rake pkg:check_version
       - run: bundle exec rake pkg:compare_latest_tag
@@ -180,7 +180,7 @@ jobs:
           clean: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 2.7.8
           bundler-cache: true
       - name: Build Puppet module (PDK)
         run: bundle exec pdk build --force