[sonic-snmpagent] Update submodule (#9076)

#### Why I did it
Includes below commits
```
c2d4945 2021-09-17 | [snmp] Allow system with no ports in config db run without errors (#221) [Lior Avramov]
fccb21b 2021-08-30 | [RFC1213]: Initialize lag oid map in reinit_data instead of (#232) [SuvarnaMeenakshi]
```
This commit is contained in:
Qi Luo 2021-10-29 07:15:00 -07:00 committed by GitHub
parent 51c9c98648
commit 1c07d39cda
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@ -1 +1 @@
Subproject commit 43b5e1abefb7a1690e21d07eaa97479478bd5454
Subproject commit c2d494504d35c0efa2629d83ad582f18ea4c809f