[submodule] Update submodule sonic-mgmt-framework to the latest HEAD …

…automatically (#15549)

#### Why I did it
src/sonic-mgmt-framework
```
* 4a2ff41 - (HEAD -> master, origin/master, origin/HEAD) [actions] Support Semgrep by Github Actions (#116) (5 hours ago) [Mai Bui]
```
#### How I did it
#### How to verify it
#### Description for the changelog