chore: align Node floor with Etherpad (>=24) (#966)

Etherpad has settled back on Node 24 as its minimum supported runtime
(ether/etherpad#7781), so ueberDB's recent bump to >=25 (#961) is now
ahead of its primary consumer. Lower `engines.node` and the CI runner
back to 24 to keep the library in lock-step.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: JohnMcLear

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
-          node-version: 25
+          node-version: 24
 
       - name: Get pnpm store path
         id: pnpm-cache

.github/workflows/npmpublish.yml

@@ -22,7 +22,7 @@ jobs:
 
       - uses: actions/setup-node@v6
         with:
-          node-version: 25
+          node-version: 24
 
       - name: Install pnpm
         uses: pnpm/action-setup@v5
@@ -63,7 +63,7 @@ jobs:
 
       - uses: actions/setup-node@v6
         with:
-          node-version: 25
+          node-version: 24
 
       - name: Install pnpm
         uses: pnpm/action-setup@v5

package.json

@@ -155,6 +155,6 @@
     }
   ],
   "engines": {
-    "node": ">=25.0.0"
+    "node": ">=24.0.0"
   }
 }