Build: Remove unused tap-diff, test on Node 22, update actions

`tap-diff` was temporarily added before the decision to avoid modifying QUnit
output and I forgot to remove it.

Also, add testing on Node 22. It was broken in `22.5.0` due to a bug fixed
upstream in `22.5.1`.

In addition, update GitHub Actions.

Closes gh-619

Author: mgol

.github/workflows/node.js.yml

@@ -9,22 +9,22 @@ jobs:
       fail-fast: false
       matrix:
         # Node.js 18 is required by jQuery infra
-        NODE_VERSION: [18.x, 20.x]
+        NODE_VERSION: [18.x, 20.x, 22.x]
     steps:
     - name: Checkout
-      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+      uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
     - name: Install xsltproc
       run: |
         sudo apt-get install xsltproc
 
     - name: Use Node.js ${{ matrix.NODE_VERSION }}
-      uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
+      uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
       with:
         node-version: ${{ matrix.NODE_VERSION }}
 
     - name: Cache
-      uses: actions/cache@ab5e6d0c87105b4c9c2047343972218f562e4319 # v4.0.1
+      uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
       with:
         path: ~/.npm
         key: ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
@@ -33,7 +33,7 @@ jobs:
           ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-
           ${{ runner.os }}-node-
           ${{ runner.os }}-
-    
+
 
     - name: Install dependencies
       run: |

package-lock.json

@@ -30,7 +30,6 @@
 		"qunit": "2.21.0",
 		"semver": "7.6.3",
 		"sqwish": "0.2.2",
-		"tap-diff": "0.1.1",
 		"uglify-js": "3.19.0",
 		"winston": "3.13.1",
 		"wolfy87-eventemitter": "5.2.9"