CI: attempt to fix solana run by disabling dependency cache

this might break between image version upgrades?

.github/workflows/solana.yml

@@ -52,11 +52,6 @@ jobs:
           toolchain: ${{ steps.toolchain.outputs.version }}
           components: "clippy,rustfmt"
 
-      - name: Cache Cargo dependencies
-        uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: "solana"
-
       - name: Run `cargo fmt`
         run: cargo fmt --check --all --manifest-path Cargo.toml