Bump alpine from 3.17 to 3.18 (#115)

Bumps alpine from 3.17 to 3.18.

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: gab-arrobo <[email protected]>

Dockerfile

@@ -19,7 +19,7 @@ COPY . $GOPATH/src/amf
 RUN cd $GOPATH/src/amf \
     && make all
 
-FROM alpine:3.17 as amf
+FROM alpine:3.18 as amf
 
 LABEL description="ONF open source 5G Core Network" \
     version="Stage 3"