Bump alpine from 3.15.1 to 3.15.2 (super-linter#2693)

Bumps alpine from 3.15.1 to 3.15.2.

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

Signed-off-by: dependabot[bot] <support@github.com>

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

Dockerfile

@@ -295,7 +295,7 @@ RUN ./build-venvs.sh
 ################################################################################
 # Grab small clean image to build final_slim ###################################
 ################################################################################
-FROM alpine:3.15.1 as final_slim
+FROM alpine:3.15.2 as final_slim
 
 ############################
 # Get the build arguements #