[DEVOPS-1785] Change ruby publish workflow to use api key method (#629)

## Type of change

<!-- (mark with an `X`) -->

```
- [x] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [x] Build/deploy pipeline (DevOps)
- [ ] Other
```

## Objective

<!--Describe what the purpose of this PR is. For example: what bug
you're fixing or what new feature you're adding-->

## Code changes

<!--Explain the changes you've made to each file or major component.
This should help the reviewer understand your changes-->
<!--Also refer to any related changes or PRs in other repositories-->

- **.github/workflows/publish-ruby.yml:** Use `gem push` with rubygem
API key instead of automated release steps.

## Before you submit

- Please add **unit tests** where it makes sense to do so

.github/workflows/publish-ruby.yml

@@ -107,26 +107,33 @@ jobs:
             cp "temp/${platforms[$i]}/${files[$i]}" "languages/ruby/bitwarden_sdk_secrets/lib/${platforms[$i]}/${files[$i]}"
           done
 
+      - name: Login to Azure
+        uses: Azure/login@e15b166166a8746d1a47596803bd8c1b595455cf # v1.6.0
+        with:
+          creds: ${{ secrets.AZURE_KV_CI_SERVICE_PRINCIPAL }}
+
+      - name: Retrieve secrets
+        id: retrieve-secrets
+        uses: bitwarden/gh-actions/get-keyvault-secrets@main
+        with:
+          keyvault: "bitwarden-ci"
+          secrets: "rubygem-api-key"
+
       - name: bundle install
         run: bundle install
         working-directory: languages/ruby/bitwarden_sdk_secrets
 
-      - name: Set remote URL
-        run: |
-          # Attribute commits to the last committer on HEAD
-          git config --global user.email "[email protected]"
-          git config --global user.name "bitwarden-devops-bot"
-          git remote set-url origin "https://x-access-token:${{ github.token }}@github.com/$GITHUB_REPOSITORY"
-
-      - name: Configure trusted publishing credentials
-        uses: rubygems/configure-rubygems-credentials@bc6dd217f8a4f919d6835fcfefd470ef821f5c44 # v1.0.0
-
-      - name: Run release rake task
-        if: ${{ inputs.release_type == 'Release' }}
-        run: bundle exec rake release
+      - name: Build gem
+        run: gem build bitwarden-sdk-secrets.gemspec
         working-directory: languages/ruby/bitwarden_sdk_secrets
 
-      - name: Wait for release to propagate
-        if: ${{ inputs.release_type == 'Release' }}
-        run: gem exec rubygems-await pkg/*.gem
+      - name: Push gem to Rubygems
+        run: |
+          mkdir -p $HOME/.gem
+          touch $HOME/.gem/credentials
+          chmod 0600 $HOME/.gem/credentials
+          printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
+          gem push *.gem
+        env:
+          GEM_HOST_API_KEY: ${{ steps.retrieve-secrets.outputs.rubygem-api-key }}
         working-directory: languages/ruby/bitwarden_sdk_secrets