Extract default ruby version as input parameter

I'm doing this so that existing consumers just continue to work as-is.

Signed-off-by: Gavin Didrichsen <[email protected]>

Author: gavindidrichsen

.github/workflows/module_ci.yml

@@ -27,6 +27,11 @@ on:
         required: false
         default: false
         type: "boolean"
+      ruby_version:
+        description: "Default ruby version to use"
+        required: false
+        default: '2.7'
+        type: "string"
 
 jobs:
   setup_matrix:
@@ -48,7 +53,7 @@ jobs:
       - name: "Setup ruby"
         uses: "ruby/setup-ruby@v1"
         with:
-          ruby-version: "2.7"
+          ruby-version: ${{ inputs.ruby_version }}
           bundler-cache: true
 
       - name: "Bundle environment"