Bump node from 20.8.1-bookworm-slim to 21.0.0-bookworm-slim

Bumps node from 20.8.1-bookworm-slim to 21.0.0-bookworm-slim.

---
updated-dependencies:
- dependency-name: node
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -3,7 +3,7 @@ WORKDIR /app
 COPY target/aarch64-unknown-linux-gnu/release/bitwarden-secrets-operator bitwarden-secrets-operator-arm64
 COPY target/x86_64-unknown-linux-gnu/release/bitwarden-secrets-operator bitwarden-secrets-operator-amd64
 
-FROM node:20.8.1-bookworm-slim
+FROM node:21.0.0-bookworm-slim
 WORKDIR /app
 ARG TARGETARCH
 RUN npm install -g @bitwarden/cli