ci: update node-version to 22

Signed-off-by: David Wallace <david.wallace@tu-darmstadt.de>

Author: MyPyDavid

.github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
     # build the webpack bundle
     - uses: actions/setup-node@v4
       with:
-        node-version: 18
+        node-version: 22
         cache: npm
     - run: npm ci && npm run build:dist
     # build the wheel
@@ -246,7 +246,7 @@ jobs:
         run: python -m pip check
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
           cache: npm
       - run: npm install --include=dev
       - name: Write info to step summary