Stop using legacy git protocol when downloading configobj from GitH…

…ub (nvaccess#13018)

https://github.blog/2021-09-01-improving-git-protocol-security-github/#no-more-unauthenticated-git
GitHub is in the process of disabling the old git:// protocol. Currently the url to configObj in our requirements file is using it making it impossible to install the dependency from the repository.

requirements.txt

@@ -5,7 +5,7 @@ SCons==4.1.0.post1
 comtypes==1.1.8
 pyserial==3.5
 wxPython==4.1.1
-git+git://github.com/DiffSK/configobj@3e2f4cc#egg=configobj
+git+https://github.com/DiffSK/configobj@3e2f4cc#egg=configobj
 
 #NVDA_DMP requires diff-match-patch
 diff_match_patch_python==1.0.2