Update ruby/setup-ruby action to v1.264.0 (#1915)

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

Author: renovate[bot]

.github/workflows/pr-build.yml

@@ -24,7 +24,7 @@ jobs:
           node-version: 22.20.0
 
       - name: Set up Ruby 3.2
-        uses: ruby/setup-ruby@0481980f17b760ef6bca5e8c55809102a0af1e5a # v1.263.0
+        uses: ruby/setup-ruby@6797dcbb9a1889fd411d07e8aba7eded53fb8b48 # v1.264.0
         with:
           ruby-version: 3.2
 

.github/workflows/site-build.yml

@@ -24,7 +24,7 @@ jobs:
           node-version: 22.20.0
 
       - name: Set up Ruby 3.2
-        uses: ruby/setup-ruby@0481980f17b760ef6bca5e8c55809102a0af1e5a # v1.263.0
+        uses: ruby/setup-ruby@6797dcbb9a1889fd411d07e8aba7eded53fb8b48 # v1.264.0
         with:
           ruby-version: 3.2