bear-requirements.txt: Update bandit version

This updates the bandit version to fix
the dependency issue and to fix coala
installation.

Closes #2985

Author: anshalshukla

bear-requirements.txt

@@ -3,7 +3,7 @@ aenum~=2.0.8
 apertium-lint~=0.29
 autoflake~=0.7
 autopep8~=1.2
-bandit~=1.2,<1.7
+bandit~=1.2,<1.6.3
 bashate~=0.5.1
 cmakelint~=1.3
 cppclean~=0.12.0