[submodule] Update submodule sonic-sairedis to the latest HEAD automatically (#18303)

#### Why I did it
src/sonic-sairedis
```
* bb948f6 - (HEAD -> master, origin/master, origin/HEAD) Check MDIO server thread joinable before join the thread (#1342) (18 hours ago) [Jiahua Wang]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2024-03-08 19:01:16 +08:00 committed by GitHub
parent c66acd93b4
commit b0679faf4a
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194

@ -1 +1 @@
Subproject commit d7703706917bcc0ea60edd78be9359ed87954cbc
Subproject commit bb948f632bed2bec2eaa34085a8cbed92069bf83