Switch ansible-modules-hashivault back to upstream

5.2.1 version was released with shebang fix [1].

[1]: TerryHowe/ansible-modules-hashivault@f1d30f1

Author: mnasiadka

requirements.txt

@@ -1,3 +1,3 @@
 kayobe@git+https://github.com/stackhpc/kayobe@stackhpc/2023.1
-ansible-modules-hashivault@git+https://github.com/stackhpc/ansible-modules-hashivault@stackhpc-py39
+ansible-modules-hashivault>=5.2.1
 jmespath