Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 0d97f87b6381ea06350933b375c4e821b5e10568
  - Create empty implementation of delete VNF request

    The implementation provides no functionality (just logs the call and returns 202 with a job id) but enables invocation of the adapter from a flow

    Issue-ID: SO-1632
    Change-Id: Ie71699e917173c77b217e8a9f5eb9e5b794155a7
    Signed-off-by: MichaelMorris <michael.morris@est.tech>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7815bce..0d97f87 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7815bcec2a85b023f3004e698712cea7fed2f94e
+Subproject commit 0d97f87b6381ea06350933b375c4e821b5e10568