[submodule] Update submodule sonic-restapi to the latest HEAD automatically (#16932)

#### Why I did it
src/sonic-restapi
```
* ccad4a2 - (HEAD -> master, origin/master, origin/HEAD) [Tunnel] Support co-existence of IPv4 and IPv6 tunnels (#147) (8 hours ago) [Prince Sunny]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-10-18 18:33:53 +08:00 committed by GitHub
parent 357ab54e08
commit c90bffebbd
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@ -1 +1 @@
Subproject commit c8fa96bd79e8a39261d5328fa742d2abedee6337
Subproject commit ccad4a24b3ea2dd1afd3391f7e99864bd1414976