Bump bleach in /2019/5-jupyter-azure-cognitive-services-face

Bumps [bleach](https://github.com/mozilla/bleach) from 3.1.0 to 3.1.4.
- [Release notes](https://github.com/mozilla/bleach/releases)
- [Changelog](https://github.com/mozilla/bleach/blob/master/CHANGES)
- [Commits](mozilla/bleach@v3.1.0...v3.1.4)

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

Author: dependabot[bot]

2019/5-jupyter-azure-cognitive-services-face/requirements.txt

@@ -4,7 +4,7 @@ atomicwrites==1.3.0
 attrs==19.1.0
 backcall==0.1.0
 black==19.3b0
-bleach==3.1.0
+bleach==3.1.4
 certifi==2019.3.9
 chardet==3.0.4
 Click==7.0