Cleanup GitHub Actions workflows (#6767)

* Cleanup GitHub Actions workflows
* Remove custom cache action, replace with action/setup-node's built-in
* Add `workflow_dispatch:` to all remaining workflows

.github/workflows/lint-js.yaml

@@ -2,6 +2,7 @@
 name: 'Lint: JavaScript'
 
 on:
+  workflow_dispatch:
   push:
     paths:
       - '**/*.js'
@@ -16,15 +17,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 14
-
-      - uses: actions/cache@v4
-        if: ${{ !env.ACT }}
-        with:
-          path: '**/node_modules'
-          key: node_modules-${{ hashFiles('**/package-lock.json') }}
+          cache: npm
 
       - name: Installing Node.js packages
-        run: npm install
+        run: npm ci
 
       - name: Linting JavaScript files
         run: |

.github/workflows/lint-yaml.yaml

@@ -2,6 +2,7 @@
 name: 'Lint: YAML'
 
 on:
+  workflow_dispatch:
   push:
     paths:
       - '**/*.yml'
@@ -18,15 +19,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 14
-
-      - uses: actions/cache@v4
-        if: ${{ !env.ACT }}
-        with:
-          path: '**/node_modules'
-          key: node_modules-${{ hashFiles('**/package-lock.json') }}
+          cache: npm
 
       - name: Installing Node.js packages
-        run: npm install
+        run: npm ci
 
       - name: Linting YAML files
         run: |