Add gyumin@ to media2 OWNERS
Add gyumin@ to media2 OWNERS

Test: N/A
Change-Id: Ia14e205fba0d6801bc1b670e98c83dddd2685aff

AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx