[deps]: Update dtolnay/rust-toolchain digest to c5a29dd (#13659)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Daniel García <dani-garcia@users.noreply.github.com>

.github/workflows/test.yml

@@ -152,7 +152,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Install rust
-        uses: dtolnay/rust-toolchain@a54c7afa936fefeb4456b2dd8068152669aa8203 # stable
+        uses: dtolnay/rust-toolchain@c5a29ddb4d9d194e7c84ec8c3fba61b1c31fee8c # stable
         with:
           toolchain: stable
           components: llvm-tools