Bump bleach from 3.1.0 to 3.1.4 in /PaddleRec/ncf

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](https://github.com/mozilla/bleach/compare/v3.1.0...v3.1.4)
Signed-off-by: Ndependabot[bot] <support@github.com>

PaddleRec/ncf/requirements.txt

@@ -3,7 +3,7 @@ aspy.yaml==1.3.0
 attrs==19.2.0
 audioread==2.1.8
 backcall==0.1.0
-bleach==3.1.0
+bleach==3.1.4
 cachetools==4.0.0
 certifi==2019.9.11
 cffi==1.14.0