feat!: remove Node 20 support

Author: pacostas

.github/workflows/nodejs-ci-action.yml

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [20.x, 22.x, 24.x]
+        node-version: [22.x, 24.x, 26.x]
 
     steps:
     - uses: actions/checkout@v6

.github/workflows/release-please.yml

@@ -18,7 +18,7 @@ jobs:
         if: ${{ steps.release.outputs.release_created }}
       - uses: actions/setup-node@v6
         with:
-          node-version: 20
+          node-version: 26
           registry-url: 'https://registry.npmjs.org'
         if: ${{ steps.release.outputs.release_created }}
       - run: npm ci

package-lock.json

@@ -32,7 +32,7 @@
     }
   ],
   "engines": {
-    "node": "^24 || ^22 || ^20"
+    "node": "^26 || ^24 || ^22"
   },
   "repository": {
     "type": "git",