manifest: Use tools/repohooks master branch

All master has over android10-release is py3 compat and a bunch
of formatting and UTF-8 fixes

Change-Id: I05f6bd5b4f4fcd6fd703e332ac2168aa9679bd2a
1 file changed
tree: 61f9acbca06918998ebb9d3ae01de689017598b5
  1. snippets/
  2. default.xml
  3. README.mkdn