build(deps): bump salt from 3002.8 to 3003.5 in /salt/tests

Bumps [salt](https://github.com/saltstack/salt) from 3002.8 to 3003.5.
- [Release notes](https://github.com/saltstack/salt/releases)
- [Changelog](https://github.com/saltstack/salt/blob/master/CHANGELOG.md)
- [Commits](saltstack/salt@v3002.8...v3003.5)

---
updated-dependencies:
- dependency-name: salt
  dependency-type: direct:production
...

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

Author: dependabot[bot]

salt/tests/requirements.in

@@ -1,6 +1,6 @@
 pytest
 pytest-cov
-salt == 3002.9
+salt == 3003.5
 mock == 3.0.5
 parameterized == 0.7.4
 etcd3 != 0.11.0