Update Docker base image to 20.10.5 on our pipeline
What does this MR do?
Updates the Docker image to 20.10.5 used on our pipeline.
What are the relevant issue numbers?
Closes #323454
Does this MR meet the acceptance criteria?
- [n/a] Changelog entry added
- [n/a] Documentation created/updated for GitLab EE, if necessary
- [n/a] Documentation created/updated for this project, if necessary
- [n/a] Documentation reviewed by technical writer or follow-up review issue created
- [n/a] Tests added for this feature/bug
- [n/a] Job definition updated, if necessary
- [n/a] Job definition example
- [n/a] Vendored CI Templates (also in CE)
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Conforms to the code review guidelines - [n/a] Conforms to the Go guidelines
- [n/a] Security reports checked/validated by reviewer
Edited by Takuya Noguchi