Simplify CI matrix and upgrade NAN for Electron 39 compatibility

- Limit CI to Node 22.x and Electron 39.2.7 on ubuntu-latest
- Upgrade NAN from 2.22.2 to 2.24.0 for Electron 39/V8 compatibility
- Fixes 'SetPrototype' error with newer V8 in Electron 39

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: rathboma

.github/workflows/electron.yml

@@ -13,8 +13,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        electron-version: ['30.0.0', '32.0.0', '33.0.0', '39.2.7']
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        electron-version: ['39.2.7']
+        os: [ubuntu-latest]
 
     steps:
     - name: Checkout code

.github/workflows/nodejs.yml

@@ -13,8 +13,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [18.x, 20.x, 22.x]
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        node-version: [22.x]
+        os: [ubuntu-latest]
 
     steps:
     - name: Checkout code

package-lock.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "help": "^3.0.2",
-    "nan": "^2.22.2"
+    "nan": "^2.24.0"
   },
   "devDependencies": {
     "mocha": "^10.2.0"