Updating requirements for libjuju 3.0.0 upgrade

Change-Id: I0b35e33332c25a7438857bbcdcfa3a76e911108d
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>
diff --git a/requirements.in b/requirements.in
index 14eb7d0..0b56729 100644
--- a/requirements.in
+++ b/requirements.in
@@ -33,3 +33,4 @@
 pyyaml==5.4.1
 requests
 six
+certifi==2022.9.24
\ No newline at end of file