Upgrade doublestar to v4.4.0
What does this MR do?
Upgrades doublestar to v4.4.0. For the v15.7.2 patch I had to downgrade doublestar manually since the go.mod file was already updated with the POSIX commit d712b0a3. Then when merging 15-7-stable back into main this commit was also applied so doublestar was downgraded in main. This MR fixes that.
The upgrade was initially done in f588f9be