feat!: remove Node 16 and Node 18 support (#921)

This is a breaking change

Author: lholmquist

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

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x, 21.x, 22.x, 24.x]
+        node-version: [20.x, 22.x, 24.x]
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/release-please.yml

@@ -18,7 +18,7 @@ jobs:
         if: ${{ steps.release.outputs.release_created }}
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           registry-url: 'https://registry.npmjs.org'
         if: ${{ steps.release.outputs.release_created }}
       - run: npm ci

README.md

@@ -20,7 +20,7 @@ on the web - search it! Fowler's blog post is one place to
 | Documentation:  | https://nodeshift.dev/opossum/ |
 | Typings:        | https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/opossum
 | Issue tracker:  | https://github.com/nodeshift/opossum/issues  |
-| Engines:        | Node.js >= 16 |
+| Engines:        | Node.js >= 20 |
 
 ## Usage