update CI jobs

.github/workflows/validate_pr.yml

@@ -2,37 +2,41 @@ name: Test and Check
 
 on:
   push:
-    branches:
-      - main
+    branches: [main]
   pull_request:
+    branches: [main]
+    paths-ignore:
+      - "README.md"
+
+  workflow_dispatch:
 
 jobs:
   test:
     concurrency:
-        group: clippy-${{ github.ref }}
-        cancel-in-progress: true
+      group: test-${{ github.ref }}
+      cancel-in-progress: true
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v2
-    
-    - name: Install toolchain
-      id: toolchain
-      uses: actions-rs/toolchain@master
-      with:
-        profile: minimal
-        toolchain: stable
-        target: wasm32-unknown-unknown
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install toolchain
+        id: toolchain
+        uses: actions-rs/toolchain@master
+        with:
+          profile: minimal
+          toolchain: stable
+          target: wasm32-unknown-unknown
 
-    - name: Install protobuf-compiler
-      run: sudo apt-get install protobuf-compiler
+      - name: Install protobuf-compiler
+        run: sudo apt-get install protobuf-compiler
 
-    - name: Rust Cache
-      uses: Swatinem/[email protected]
+      - name: Rust Cache
+        uses: Swatinem/[email protected]
 
-    - name: Test workspace
-      run: cargo test --package pallet-eth2-light-client
+      - name: Test workspace
+        run: cargo test --package pallet-eth2-light-client
 
   rustfmt:
     concurrency:
@@ -69,7 +73,7 @@ jobs:
 
       - name: Rust Cache
         uses: Swatinem/[email protected]
-      
+
       - name: Install Protobuf
         run: sudo apt-get install protobuf-compiler