Bump psutil from 5.7.2 to 5.7.3

Bumps [psutil](https://github.com/giampaolo/psutil) from 5.7.2 to 5.7.3.
- [Release notes](https://github.com/giampaolo/psutil/releases)
- [Changelog](https://github.com/giampaolo/psutil/blob/master/HISTORY.rst)
- [Commits](https://github.com/giampaolo/psutil/compare/release-5.7.2...release-5.7.3)

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -12,7 +12,7 @@ numpy==1.19.2
 orjson==3.4.1
 ortools==8.0.8283
 pandas==1.1.3
-psutil==5.7.2
+psutil==5.7.3
 pydriller==1.12
 pyOpenSSL>=0.14  # Could not find a version that satisfies the requirement pyOpenSSL>=0.14; extra == "security" (from requests[security]>=2.7.0->libmozdata==0.1.43)
 python-dateutil==2.8.1