maint: bump nodejs to v20.x

Author: gnikit

.github/workflows/main.yaml

@@ -6,7 +6,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         gcc_v: [11]
-        node-version: [18.x]
+        node-version: [20.x]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     env:

.github/workflows/nightly.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20.x
 
       - name: Check if there are changes to deploy
         id: deploy-nightly

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20.x
       - run: npm ci
 
       # Package and publish the extension to VS Code Marketplace