Manual update of pip requirements

Change-Id: I3ad1890aea080255f50a9d4f6e037ffb1425bf01
Signed-off-by: beierlm <mark.beierl@canonical.com>
diff --git a/requirements.in b/requirements.in
index 3d69459..9dbfc17 100644
--- a/requirements.in
+++ b/requirements.in
@@ -19,7 +19,7 @@
 pyangbind
 python-openstackclient
 pyyaml<6
-regex==2021.11.10 # from IM
+regex
 requests
 robotframework
 robotframework-jsonlibrary