Bump node from 8 to 22

Bumps node from 8 to 22.

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

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

Author: dependabot[bot]

Dockerfile

@@ -22,7 +22,7 @@ RUN \
     echo "version=$version" && \
     go build -o ukeeper-readability -ldflags "-X main.revision=${version} -s -w" .
 
-FROM --platform=$BUILDPLATFORM node:18 as build-frontend
+FROM --platform=$BUILDPLATFORM node:22 as build-frontend
 
 ADD frontend /build
 WORKDIR /build