Update pre-commit flake8 to new location

Signed-off-by: Eric Kunze <eric.kunze@arm.com>
Change-Id: I9b6af85f27ea0e5618e2537b03ec956939d31fed
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f40778a..3afbd2d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,7 +11,7 @@
         #j.hooks:
         #j.-   id: black
 
--   repo: https://gitlab.com/pycqa/flake8
+-   repo: https://github.com/pycqa/flake8
     rev: 3.7.9
     hooks:
     -   id: flake8