Bump alpine from 3.20.1 to 3.20.2 (#778)

Bumps alpine from 3.20.1 to 3.20.2.

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

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

Dockerfile

@@ -8,7 +8,7 @@ RUN apk add git \
     && CGO_ENABLED=0 go build -ldflags="-s -w -X 'github.com/prometheus/common/version.Version=$VERSION'"
 
 
-FROM alpine:3.20.1
+FROM alpine:3.20.2
 
 RUN apk add --no-cache tzdata \
     && mkdir -p /etc/dnscollector/ /var/dnscollector/ \