Drop support for end-of-life node versions

.github/workflows/npm-publish.yml

@@ -16,7 +16,7 @@ jobs:
           submodules: recursive
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           registry-url: https://registry.npmjs.org/
           cache: "npm"
       - run: npm ci

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        node: [10, 12, 14, 16, 18, 20]
+        node: [16, 18, 20, 21]
         os: [ubuntu-22.04]
         include:
           # single mac test due to minute multipliers
@@ -39,5 +39,5 @@ jobs:
         run: npm ci
       # skipping on windows for now due to Make / mocha exit code issues
       - name: Test
-        if: runner.os != 'Windows' && matrix.node != 10
+        if: runner.os != 'Windows'
         run: npm test

CONTRIBUTING.md

@@ -215,7 +215,7 @@ Steps to update:
     ```
     Note: This is ran automatically during CI flows but it's good to run it during the version upgrade pull request.
 
-1. Run `npm install --lockfile-version 2` to build with the new version and fix any build errors that occur.
+1. Run `npm install` to build with the new version and fix any build errors that occur.
 
 1. Run unit tests: `npm run test`
 

README.md

@@ -34,7 +34,7 @@ Play nice; Play fair.
 ## Requirements
 
 * Apache Kafka >=0.9
-* Node.js >=4
+* Node.js >=16
 * Linux/Mac
 * Windows?! See below
 * OpenSSL