Submodule GitExtensionsSrc updated

Submodule GitExtensionsSrc:
    > a982b6b - Change log updated
    > bd5332d - Uninstall action added to uninstaller. Closes #1079
    > c9ae90f - Double appearance of "Current unstaged changes" fixed. Closes #2407
    > 4193a7a - Backslash correction turned off for URLs. Closes #2509
    > fe2fc77 - Version updated to 2.48.02
    > a60f234 - Should fix command bar position saving in some cases. Closes #1493
    > 474bc6b - Installing GitCredentialsHelper fixed. Closes #2467, #2483
    > e300f1e - .nuget directory case fixed
    > 79c494a - Tests for PathUtil added
    > b4d755e - Settings stored at the Distributed level always have to be set directly
    > 6d4010c - .nuget directory case fixed
    > 11cfb80 - Fix for "fatal: Not a valid object name" when displaying a nonexistent file blob