build(deps): bump freezegun from 0.3.15 to 1.0.0

Bumps [freezegun](https://github.com/spulec/freezegun) from 0.3.15 to 1.0.0.
- [Release notes](https://github.com/spulec/freezegun/releases)
- [Changelog](https://github.com/spulec/freezegun/blob/master/CHANGELOG)
- [Commits](spulec/freezegun@0.3.15...1.0.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

travis/requirements.txt

@@ -1,5 +1,5 @@
 coverage==5.2.1
-freezegun==0.3.15
+freezegun==1.0.0
 pylint==2.6.0
 pytest==6.0.1
 pytest-asyncio==0.14.0