chore: add 15.3

Author: blacktop

.github/workflows/c-cpp.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        macos-version: [ '15.2' ]
+        macos-version: [ '15.3' ]
     steps:
       - name: Checkout
         uses: actions/checkout@v4

README.md

@@ -31,6 +31,7 @@
 | macOS 15.0 |    ✅     | [DB](https://github.com/blacktop/darwin-xnu-build/releases/download/v15.0/xnu-codeql.zip) |    ✅       /     ✅     |
 | macOS 15.1 |    ✅     | [DB](https://github.com/blacktop/darwin-xnu-build/releases/download/v15.1/xnu-codeql.zip) |    ❔       /     ❔     |
 | macOS 15.2 |    ✅     | [DB](https://github.com/blacktop/darwin-xnu-build/releases/download/v15.2/xnu-codeql.zip) |    ❔       /     ❔     |
+| macOS 15.3 |    ✅     | [DB](https://github.com/blacktop/darwin-xnu-build/releases/download/v15.3/xnu-codeql.zip) |    ❔       /     ❔     |
 
 > [!NOTE]
 > CodeQL DBs built with `MACHINE_CONFIG=VMAPPLE`