build(deps): bump alpine from 3.21 to 3.22 in /dns/dnsperfgo

Bumps alpine from 3.21 to 3.22.

---
updated-dependencies:
- dependency-name: alpine
  dependency-version: '3.22'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

dns/dnsperfgo/Dockerfile

@@ -8,7 +8,7 @@ RUN CGO_ENABLED=1 go build -o /dnsperfcgo
 RUN CGO_ENABLED=0 go build -o /dnsperfgo
 
 # runtime image
-FROM alpine:3.21
+FROM alpine:3.22
 # install bind-tools to prevent nslookup from sending PTR queries for each response IP
 RUN apk add --no-cache ca-certificates bash tcpdump git bind-tools
 # This is to make sure dnstest compiled on debian can run in alpine/musl