Update dependency ory-kratos-client to v1.3.8

This MR contains the following updates:

Package	Update	Change
ory-kratos-client	minor	==1.2.0 -> ==1.3.8

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backend/requirements.in

@@ -15,7 +15,7 @@ jinja2-base64-filters==0.1.4
 kubernetes==32.0.1
 pymysql==1.1.1
 NamedAtomicLock==1.1.3
-ory-kratos-client==1.2.0
+ory-kratos-client==1.3.8
 ory-hydra-client==2.2.0
 pip-install==1.3.5
 posix-ipc==1.1.1