Bump alpine from 77726ef to 0a4eaa0 in /integration-test (#657)

Bumps alpine from `77726ef` to `0a4eaa0`.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
...

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

integration-test/Dockerfile.tester

@@ -1,4 +1,4 @@
-FROM alpine@sha256:77726ef6b57ddf65bb551896826ec38bc3e53f75cdde31354fbffb4f25238ebd
+FROM alpine@sha256:0a4eaa0eecf5f8c050e5bba433f58c052be7587ee8af3e8b3910ef9ab5fbe9f5
 
 USER root