Bump alpine from 3.15.0 to 3.15.1

Bumps alpine from 3.15.0 to 3.15.1.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Dockerfile

@@ -9,7 +9,7 @@ COPY . .
 
 RUN go mod download && make release
 
-FROM alpine:3.15.0
+FROM alpine:3.15.1
 LABEL maintainer="SkynetLabs <[email protected]>"
 
 COPY --from=builder /go/bin/skynet-accounts /usr/bin/skynet-accounts