Update git submodules

* Update docs/submodules/policy/parent.git from branch 'master'
  to 1212fc3268a233b0a98e05221d3615a717f1b0db
  - Merge "Update API documentation"
  - Update API documentation

    API documentation updated to clarify and explain how TOSCA checks are
    carried out, warnings added to the docuemtation to explain how the
    policy type and data type hierarchy and policy to policy type references
    are checked and under what circumstances errors are reported.

    Issue-ID: POLICY-2500
    Change-Id: I3cbb7d45ed9997b04b523a4b3cfe32950df71262
    Signed-off-by: liamfallon <liam.fallon@est.tech>

diff --git a/docs/submodules/policy/parent.git b/docs/submodules/policy/parent.git
index 8e5427f..1212fc3 160000 (submodule)
--- a/docs/submodules/policy/parent.git
+++ b/docs/submodules/policy/parent.git
@@ -1 +1 @@
-Subproject commit 8e5427f976cf027d1a66a7818c8563a851eb7781
+Subproject commit 1212fc3268a233b0a98e05221d3615a717f1b0db