Fixed code coverage nightly pipeline

Author: stefan-k

.github/workflows/coverage.yml

@@ -18,13 +18,13 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: nightly-2024-08-29
+          toolchain: nightly-2025-02-25
 
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov
 
       - name: Generate code coverage
-        run: cargo +nightly-2024-08-29 llvm-cov --doctests --features "argmin/_full_dev,argmin-math/latest_all" --workspace --exclude argmin-testfunctions-py --lcov --output-path lcov.info
+        run: cargo +nightly-2025-02-25 llvm-cov --doctests --features "argmin/_full_dev,argmin-math/latest_all" --workspace --exclude argmin-testfunctions-py --lcov --output-path lcov.info
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4