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

Author: renovate[bot]

Dockerfile

@@ -6,7 +6,7 @@ RUN apk add git && \
     npm install && \
     PRODUCTION=true npm run-script build
 
-FROM alpine:3.20 AS main
+FROM alpine:3.22 AS main
 
 LABEL name="docker-beets" \
       maintainer="Jee jee@jeer.fr" \