Update alpine Docker tag to v3.22 (#232)

| datasource | package | from | to   |
| ---------- | ------- | ---- | ---- |
| docker     | alpine  | 3.21 | 3.22 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.17
-ARG BUILD_OS=alpine:3.21
+ARG BUILD_OS=alpine:3.22
 ARG OPENSSL_VERSION=3.0.9
 
 FROM ${BUILD_OS} AS alpine