chore(deps): update alpine docker tag to v3.17.3

Author: plural-renovate[bot]

dockerfiles/Dockerfile.cloud

@@ -23,7 +23,7 @@ RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} \
     go build -ldflags "-s -w -X main.version=${APP_VSN} -X main.commit=${APP_COMMIT} -X main.date=${APP_DATE}" \
     -o plural ./cmd/plural/
 
-FROM alpine:3.17.1 as tools
+FROM alpine:3.17.3 as tools
 
 ARG TARGETARCH