Use konradit/gopro-utils @v1.0.0

[KonradIT]

Use newer dependency for GPMF

Going to maintain a GPMF parsing library which is forked off of stilldavid/gopro-utils, mainly for using it in mmt.

[KonradIT]

Didn't break anything:

=== RUN   TestParseGPMF
	Testing [hero5.mp4]
	returned: 33.126497 -117.327354
	Testing [hero6+ble.mp4]
	returned: 33.126733 -117.327445
	Testing [hero6.mp4]
	returned: 33.126515 -117.327168
	Testing [hero6a.mp4]
	returned: 33.126844 -117.327406
	Testing [hero7.mp4]	Testing [hero8.mp4]
	returned: 37.665295 -127.655401
	Testing [karma.mp4]	Testing [max-360mode.mp4]
	returned: 33.126672 -117.327306
	Testing [max-heromode.mp4]
	returned: 33.126770 -117.327344
--- PASS: TestParseGPMF (26.42s)