Merge pull request #8865 from joshcooper/backport_check_fix

(maint) Update rubygems and remove unnecessary step

Author: GabrielNagy

.github/workflows/checks.yaml

@@ -29,9 +29,9 @@ jobs:
         with:
           ruby-version: ${{ matrix.cfg.ruby }}
 
-      - name: Install bundler and gems
+      - name: Update rubygems and install gems
         run: |
-          gem install bundler
+          gem update --system --no-document
           bundle config set without packaging documentation
           bundle install --jobs 4 --retry 3
 

.github/workflows/rspec_tests.yaml

@@ -33,9 +33,9 @@ jobs:
         with:
           ruby-version: ${{ matrix.cfg.ruby }}
 
-      - name: Install bundler and gems
+      - name: Update rubygems and install gems
         run: |
-          gem install bundler
+          gem update --system --no-document
           bundle config set without packaging documentation
           bundle install --jobs 4 --retry 3