Update sccache version used on CI to 0.9.1

Author: Kobzol

src/ci/docker/scripts/sccache.sh

@@ -6,10 +6,10 @@ set -ex
 
 case "$(uname -m)" in
     x86_64)
-        url="https://ci-mirrors.rust-lang.org/rustc/2021-08-24-sccache-v0.2.15-x86_64-unknown-linux-musl"
+        url="https://ci-mirrors.rust-lang.org/rustc/2025-01-07-sccache-v0.9.1-x86_64-unknown-linux-musl"
         ;;
     aarch64)
-        url="https://ci-mirrors.rust-lang.org/rustc/2021-08-25-sccache-v0.2.15-aarch64-unknown-linux-musl"
+        url="https://ci-mirrors.rust-lang.org/rustc/2025-01-07-sccache-v0.9.1-aarch64-unknown-linux-musl"
         ;;
     *)
         echo "unsupported architecture: $(uname -m)"