CI: fix security audit (#1121)

Author: tarcieri

.github/workflows/security-audit.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/cache@v5
         with:
           path: ~/.cargo/bin
-          key: ${{ runner.os }}-cargo-audit-v0.21.2
+          key: ${{ runner.os }}-cargo-audit-v0.22.0
       - uses: rustsec/audit-check@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}