Fix github pr ci cache warnings (#1086)

* feat: Add shared-key to cargo cache action

Co-authored-by: contact <[email protected]>

* Refactor: Use matrix-specific cache key in CI

Co-authored-by: contact <[email protected]>

* feat: Cache Rust build artifacts only on main branch

Co-authored-by: contact <[email protected]>

---------

Co-authored-by: Cursor Agent <[email protected]>

Author: lovasoa

.github/workflows/ci.yml

@@ -60,6 +60,9 @@ jobs:
       - uses: actions/checkout@v4
       - name: Set up cargo cache
         uses: Swatinem/rust-cache@9d47c6ad4b02e050fd481d890b2ea34778fd09d6
+        with:
+          key: test-${{ matrix.database }}
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: Install PostgreSQL ODBC driver
         if: matrix.setup_odbc
         run: sudo apt-get install -y odbc-postgresql