Bump cchardet from 2.1.4 to 2.1.5 in /services/ingest-file

Bumps [cchardet](https://github.com/PyYoshi/cChardet) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/PyYoshi/cChardet/releases)
- [Changelog](https://github.com/PyYoshi/cChardet/blob/master/CHANGES.rst)
- [Commits](PyYoshi/cChardet@2.1.4...2.1.5)

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

services/ingest-file/requirements.txt

@@ -26,7 +26,7 @@ rarfile==3.1
 xlrd==1.2.0
 openpyxl==3.0.0
 odfpy==1.4.0
-cchardet==2.1.4
+cchardet==2.1.5
 lxml==4.4.1
 olefile==0.46
 pillow==6.2.1