security(docker): bump golang from 620e0c8 to 21edeab

Bumps golang from `620e0c8` to `21edeab`.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Dockerfile

@@ -7,7 +7,7 @@ COPY . /usr/app
 
 RUN npm ci && node_modules/antora/bin/antora antora-playbook.yml
 
-FROM golang:1.22.10-alpine3.20@sha256:620e0c81a9e547fe88ad6344128e735bb1ac6cca440ced5212e3c74fb2753ba7 AS build_stage
+FROM golang:1.22.10-alpine3.20@sha256:21edeab9ed48e9820f0b447cce6ce1900b3aa90ffce3c8b4de7fae5ac333de0c AS build_stage
 
 COPY . .
 COPY --from=docs_stage /usr/app/build/site internal/website/resources/