extract version of go to input in action setup-go (kyma-project#35)

Author: anoipm

.github/actions/setup-go/action.yaml

@@ -1,10 +1,16 @@
 name: 'Setup go'
 description: 'Action for the go setup'
 
+inputs:
+  version:
+    description: 'go version to checkout'
+    required: true
+    default: '1.22'
+
 runs:
   using: 'composite'
   steps:
     - name: Setup go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.22'
+        go-version: ${{ inputs.version }}