Update pip dependencies

Change-Id: I66c9047f6b607f9417bd5c0880c5eb7a7b806027
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/requirements.in b/requirements.in
index 95605f5..4e26900 100644
--- a/requirements.in
+++ b/requirements.in
@@ -14,8 +14,9 @@
 charset-normalizer
 google-auth<2.18.0
 juju==2.9.44.0
-kubernetes==26.1.0
+kubernetes
 motor
+protobuf==3.20.3
 pyasn1
 pyyaml>6
 retrying-async