adds publish step and run build command

.github/workflows/publish.yml

@@ -0,0 +1,37 @@
+name: Publish
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout xero-ruby repo
+        uses: actions/checkout@v4
+        with:
+          repository: XeroAPI/xero-ruby
+          path: xero-ruby
+
+      - name: Set up Ruby environment
+        uses: ruby/setup-ruby@v1
+        with: 
+          ruby-version: '3.2.0'
+          bundler-cache: true
+
+      - name: Install dependencies
+        run: bundle install
+        working-directory: xero-ruby
+
+      - name: Run Build
+        run: gem build
+        working-directory: xero-ruby
+
+      - name: Publish to Ruby
+        env:
+          RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}
+        run: |
+          gemspec_file=$(ls *.gemspec) 
+          gem_file=$(gem build "$gemspec_file" | grep -o '[^ ]*\.gem')
+          echo "$gem_file"
+        working-directory: xero-ruby

lib/xero-ruby/version.rb

@@ -11,5 +11,5 @@
 =end
 
 module XeroRuby
-  VERSION = '9.3.0'
+  VERSION = '9.3.0-alpha'
 end