Merge pull request #75 from fnplus/dependabot/pip/E-Certificate-Writer/pillow-8.3.2

Bump pillow from 6.2.0 to 8.3.2 in /E-Certificate-Writer

Author: xlogix

E-Certificate-Writer/requirements.txt

@@ -1,7 +1,7 @@
 img2pdf==0.3.3
 numpy==1.17.2
 pandas==0.25.1
-Pillow==6.2.0
+Pillow==8.3.2
 python-dateutil==2.8.0
 pytz==2019.3
 six==1.12.0