chore(deps): update gcr.io/distroless/cc docker digest to b6e1e91

Author: renovate[bot]

Dockerfile

@@ -16,7 +16,7 @@ RUN cargo chef cook --release --recipe-path recipe.json
 COPY . .
 RUN cargo build --release
 
-FROM gcr.io/distroless/cc@sha256:e1065a1d58800a7294f74e67c32ec4146d09d6cbe471c1fa7ed456b2d2bf06e0
+FROM gcr.io/distroless/cc@sha256:b6e1e913f633495eeb80a41e03de1a41aa863e9b19902309b180ffdc4b99db2c
 WORKDIR app
 COPY --from=builder /build/target/release/hubhook .
 CMD ["/app/hubhook"]