setup: improve rust github action

.github/workflows/lint.yml

@@ -36,4 +36,3 @@ jobs:
       - uses: gaurav-nelson/github-action-markdown-link-check@v1
         with:
           use-quiet-mode: "yes"
-          folder-path: "improvement-proposals, RFPs, specs"

.github/workflows/rust.yml

@@ -1,21 +1,36 @@
 name: Rust
 
 on:
-  push:
-    branches: [ "master" ]
   pull_request:
-    branches: [ "master" ]
+    branches: [master, main]
+  merge_group:
+  push:
+    branches: ["master"]
+
+concurrency:
+  group: ci-${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+  test:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v3
+      - uses: technote-space/[email protected]
+        with:
+          PATTERNS: |
+            **/**.rs
+            contracts/Cargo.lock
+      - name: Build
+        if: env.GIT_DIFF
+        run: cargo build --verbose
+      - name: Clippy
+        if: env.GIT_DIFF
+        run: cargo clippy
+      - name: Run tests
+        if: env.GIT_DIFF
+        run: cargo test --verbose