fix: output otel ruby sdk version (open-telemetry#1443)

Author: xuan-cao-swi

.github/release.yml

@@ -19,6 +19,10 @@ changelog:
       labels:
         - java
 
+    - title: Ruby
+      labels:
+        - ruby
+
     - title: Other Dependencies
       labels:
         - dependencies

.github/workflows/release-layer-ruby.yml

@@ -19,12 +19,20 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Build
-        id: save-ruby-sdk-version
         run: |
           ./build.sh
         shell: bash
         working-directory: ruby/src
 
+      - name: Save Ruby SDK Version
+        id: save-ruby-sdk-version
+        run: |
+          unzip -q build/opentelemetry-ruby-layer.zip
+          export GEM_PATH=$PWD/ruby/gems/3.2.0/
+          RUBY_SDK_VERSION=$(ruby -e 'require "opentelemetry-sdk"; puts OpenTelemetry::SDK::VERSION')
+          echo "RUBY_SDK_VERSION=$RUBY_SDK_VERSION" >> $GITHUB_OUTPUT
+        working-directory: ruby/src
+
       - name: Show directory contents
         run: |
           ls -al