update exoplayer and gradle wrapper

* exoplayer 2.13.2 -> 2.13.3
* gradle 6.7.1 -> 7.0
* remove jcenter repository (fixes #29)
This commit is contained in:
2021-04-17 21:38:03 +02:00
parent 86dfd69b4b
commit 8160641b8f
6 changed files with 10 additions and 25 deletions

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