ci: cached dependencies to speed up GitHub workflows.

.github/workflows/lint.yml

@@ -2,14 +2,30 @@ name: Lint files
 
 on:
   push:
-    branches: [main]
+    # branches: [main]
   pull_request:
-    branches: [main]
+    # branches: [main]
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: lint files
-        run: yarn install && yarn lint
+
+      - name: Cache node modules
+        id: cache-node-modules
+        uses: actions/cache@v3
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-node-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+            ${{ runner.os }}-
+      
+      -
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        name: Install dependencies
+        run: yarn install
+
+      - name: Lint files
+        run: yarn lint