Merge pull request #237 from crumbhole/renovate/alpine-3.x

chore(deps): update alpine docker tag to v3.20.0

Dockerfile

@@ -5,7 +5,7 @@ RUN go vet ./...
 RUN go test ./...
 RUN CGO_ENABLED=0 go build -buildvcs=false -o build/argocd-vault-replacer
 
-FROM alpine:3.19.1 as putter
+FROM alpine:3.20.0 as putter
 COPY --from=builder /build/build/argocd-vault-replacer .
 USER 999
 ENTRYPOINT [ "cp", "argocd-vault-replacer", "/custom-tools/" ]