chore: drop Node.js 20 support

BREAKING CHANGE: drop Node.js 20 support

Signed-off-by: dhmlau <dhmlau@ca.ibm.com>

Author: dhmlau

.github/workflows/continuous-integration.yml

@@ -21,13 +21,11 @@ jobs:
         node-version:
           - 16
           - 18
-          - 20
-          - 21
         include:
           - os: macos-latest
-            node-version: 20 # LTS
+            node-version: 22
           - os: windows-latest
-            node-version: 20 # LTS
+            node-version: 22
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
@@ -71,10 +69,10 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
-      - name: Use Node.js 20
+      - name: Use Node.js 22
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: 20.20.2
+          node-version: 22
           cache: 'npm'
       - name: Bootstrap project
         run: |
@@ -100,10 +98,10 @@ jobs:
         with:
           fetch-depth: 0
           persist-credentials: false
-      - name: Use Node.js 20
+      - name: Use Node.js 22
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: 20.20.2
+          node-version: 22
           cache: npm
       - name: Bootstrap project
         run: |
@@ -135,10 +133,10 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
-      - name: Use Node.js 20
+      - name: Use Node.js 22
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: 20.20.2
+          node-version: 22
           cache: npm
       - name: Bootstrap project
         run: |