Update alpine Docker tag to v3.22.2

Author: renovate[bot]

deployment/Dockerfile

@@ -27,7 +27,7 @@ COPY pkg ./pkg
 RUN go install .
 
 # production image ############################################
-FROM alpine:3.15.4@sha256:4edbd2beb5f78b1014028f4fbb99f3237d9561100b6881aabbf5acce2c4f9454 AS prod
+FROM alpine:3.22.2@sha256:265b17e252b9ba4c7b7cf5d5d1042ed537edf6bf16b66130d93864509ca5277f AS prod
 RUN apk add --no-cache ca-certificates
 
 # tracing config