Update GH Actions jobs from Node 18 to 20.

Signed-off-by: Roland Grunberg <rgrunber@redhat.com>

Author: rgrunber

.github/workflows/pr-verify.yml

@@ -20,7 +20,7 @@ jobs:
         with:
           java-version: '24'
           distribution: 'temurin'
-      - run: npm install -g typescript "vsce"
+      - run: npm install -g typescript "@vscode/vsce"
       - run: wget http://download.eclipse.org/jdtls/snapshots/jdt-language-server-latest.tar.gz
       - run: mkdir server && tar -xvzf jdt-language-server-latest.tar.gz -C ./server && rm jdt-language-server-latest.tar.gz
       - run: npm install