Setup rust for C++ code analyzer (#68)

`ninja all` preprocesses the rules which requires the Rust environment
to be set.

Author: lucic71

.github/workflows/codeql.yml

@@ -35,7 +35,7 @@ jobs:
         llvm-version: 22
 
     - name: Setup Rust
-      if: matrix.language == 'rust'
+      if: matrix.language != 'actions'
       uses: dtolnay/rust-toolchain@master
       with:
         toolchain: 1.95.0