ci: test only the maintained LTS Node lines (22, 24) (#39)

The test matrix carried three EOL Node versions: 20 (EOL 2026-04-30), 23 (EOL
2025-06-01) and 25 (EOL 2026-06-01). Narrow the matrix and engines to the two
maintained LTS lines, 22 and 24, with Node 24 as the canonical anchor (it's the
active LTS through 2028). Prebuild ABI targets are left as-is for now and can be
aligned in a follow-up.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: arv

.github/workflows/build.yml

@@ -31,11 +31,8 @@ jobs:
           - macos-15-intel
           - windows-2022
         node:
-          - 20
           - 22
-          - 23
           - 24
-          - 25
     name: Testing Node ${{ matrix.node }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps:

README.md

@@ -4,6 +4,6 @@ So far the changes are:
 
 * Build the [bedrock](https://sqlite.org/src/timeline?r=bedrock) branch of SQLite to enable [`begin concurrent`](https://www.sqlite.org/src/doc/begin-concurrent/doc/begin_concurrent.md).
 * Create a shell too, so we can debug db files created
-* Supports both Node.js (20.x, 22.x, 23.x, 24.x) and Bun (>=1.1.0) runtimes
+* Supports both Node.js (22.x, 24.x) and Bun (>=1.1.0) runtimes
 
 Other changes will be likely be made over time.

package.json

@@ -20,7 +20,7 @@
     "shell.js"
   ],
   "engines": {
-    "node": "20.x || 22.x || 23.x || 24.x || 25.x",
+    "node": "22.x || 24.x",
     "bun": ">=1.1.0"
   },
   "types": "lib/index.d.ts",