Bump frolvlad/alpine-python3 in /benchmarks/docker (#1113)

Bumps frolvlad/alpine-python3 from `43284c6` to `d2b602c`.

---
updated-dependencies:
- dependency-name: frolvlad/alpine-python3
  dependency-type: direct:production
...

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

benchmarks/docker/Dockerfile-benchmark

@@ -1,4 +1,4 @@
-FROM frolvlad/alpine-python3@sha256:43284c6e0477494f64796e7cee9522d1ffe4aed4c200378f9f6c9175d025e4e2
+FROM frolvlad/alpine-python3@sha256:d2b602c49f332ab70060ecf2e3beae6f54efc4e163784620946fc04de8050c74
 
 RUN apk add docker openrc
 RUN rc-update add docker boot