chore(ci): fix alpine test (#10964)

Fix for alpine test failing on gitlab after some changes on system
tests.

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
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[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

(cherry picked from commit 2af13d9)

.gitlab-ci.yml

@@ -24,7 +24,7 @@ package-oci:
 onboarding_tests_installer:
   parallel:
     matrix:
-      - ONBOARDING_FILTER_WEBLOG: [test-app-python,test-app-python-container,test-app-python-alpine-libgcc]
+      - ONBOARDING_FILTER_WEBLOG: [test-app-python,test-app-python-container,test-app-python-alpine]
 
 onboarding_tests_k8s_injection:
   parallel: