chore(deps): update alpine docker tag to v3.22

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


Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

Dockerfile

@@ -10,7 +10,7 @@ RUN go mod download -x
 COPY . .
 RUN CGO_ENABLED=0 go build -v
 
-FROM alpine:3.21
+FROM alpine:3.22@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
 
 RUN apk add --no-cache ca-certificates