Update ruby/setup-ruby action to v1.284.0 (#953)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/push.yml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Ruby
-        uses: ruby/setup-ruby@708024e6c902387ab41de36e1669e43b5ee7085e # v1.283.0
+        uses: ruby/setup-ruby@80740b3b13bf9857e28854481ca95a84e78a2bdf # v1.284.0
         with:
           bundler-cache: false
 

.github/workflows/specs.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
-      - uses: ruby/setup-ruby@708024e6c902387ab41de36e1669e43b5ee7085e # v1.283.0
+      - uses: ruby/setup-ruby@80740b3b13bf9857e28854481ca95a84e78a2bdf # v1.284.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
@@ -45,7 +45,7 @@ jobs:
           done
           '
 
-      - uses: ruby/setup-ruby@708024e6c902387ab41de36e1669e43b5ee7085e # v1.283.0
+      - uses: ruby/setup-ruby@80740b3b13bf9857e28854481ca95a84e78a2bdf # v1.284.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true