Update golang.org/x/sync digest to 886fb93

This MR contains the following updates:

Package	Type	Update	Change
golang.org/x/sync	require	digest	036812b -> 886fb93

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.gitlab-ci.yml

@@ -9,6 +9,8 @@ run_tests:
   artifacts:
     when: always
     reports:
-      cobertura: cover.xml
+      coverage_report:
+        coverage_format: cobertura
+        path: cover.xml
       junit: report.xml