fix: remove javascript-typescript from CodeQL languages in security.yml

The repo only has Rust source code (no JS/TS). CodeQL v4 fails when
a specified language has no code to analyze, which blocks PR #5
(dependabot bumping codeql-action from v3 to v4).

.github/workflows/security.yml

@@ -16,5 +16,5 @@ jobs:
       - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v3
         with:
-          languages: javascript-typescript, rust
+          languages: rust
       - uses: github/codeql-action/analyze@v3