build(deps): bump alpine from 3.15.4 to 3.16.1

Bumps alpine from 3.15.4 to 3.16.1.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/alpine:3.15.4
+FROM docker.io/alpine:3.16.1
   
 ARG OPENSSH_SERVER_PACKAGE_VERSION=8.8_p1-r1
 RUN apk add --no-cache openssh-server=$OPENSSH_SERVER_PACKAGE_VERSION