refactor: to node action (#47)

Refactoring the action from a composite to Node action. This change improves security through pinning of packages as well as better test-ability and error handling.

Reviewed-on: #47
Co-authored-by: Timo Behrendt <t.behrendt@t00n.de>
Co-committed-by: Timo Behrendt <t.behrendt@t00n.de>

action.yml

@@ -8,26 +8,5 @@ inputs:
     required: true
 
 runs:
-  using: "composite"
-  steps:
-    - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-      with:
-        node-version: "latest"
-    - name: Extract schema
-      shell: bash
-      run: |
-        schema=$(jq -r '.["$schema"]' < ${{ inputs.json-file }})
-        if [ -n "$schema" ]; then
-          curl -s $schema > schema.json
-        else
-          echo "No schema found"
-          exit 0
-        fi
-    - name: Update the schema to the latest version
-      shell: bash
-      run: |
-        npx ajv-cli migrate -s schema.json -o schema.json
-    - name: Validate JSON
-      shell: bash
-      run: |
-        npx ajv-cli validate -s schema.json -d ${{ inputs.json-file }} --strict=false
+  using: "node24"
+  main: "dist/index.js"