Fix the gitlab warning about list returning partial results

Ask for one element when only one is required.

assigned to @ydayer

added 9 commits

• 680f7da9...65e8d10f - 7 commits from branch master
• bbd7481f - [gitlab] Remove UserWarning for tags.list() method
• 2424386a - [refactor] black

Compare with previous version

enabled an automatic merge when the pipeline for 2424386a succeeds

merged

mentioned in commit 6bc63860