HIA-764: Upgrade Ruby dependency for tech docs publisher (#511)

Author: mxco86

.github/workflows/publish-docs.yml

@@ -47,7 +47,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1
+          ruby-version: 3.2
           bundler-cache: true
           working-directory: tech-docs
       - name: Build Docs