Bump keyring from 19.0.1 to 19.0.2

Bumps [keyring](https://github.com/jaraco/keyring) from 19.0.1 to 19.0.2.
- [Release notes](https://github.com/jaraco/keyring/releases)
- [Changelog](https://github.com/jaraco/keyring/blob/master/CHANGES.rst)
- [Commits](jaraco/keyring@19.0.1...19.0.2)

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

Author: dependabot-support

requirements.txt

@@ -5,7 +5,7 @@ pycparser==2.19
 cryptography==2.6.1
 idna==2.8
 keyrings.alt==3.1.1
-keyring==19.0.1
+keyring==19.0.2
 pycrypto==2.6.1
 pysqlcipher3==1.0.3
 six==1.12.0