[submodule] update sonic-snmpagent (#7123)

Includes commits:
```
8f1526f 2021-03-22 | Temporarily lower the logging level for invalid FDB, which is a known issue on Mellanox (#206) [Qi Luo]
```
This commit is contained in:
Qi Luo 2021-03-23 14:38:56 -07:00 committed by GitHub
parent 88de361f96
commit f609c6a536
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@ -1 +1 @@
Subproject commit a8c6e360eb572ff79bde088ed09057153c5bc440
Subproject commit 8f1526f98d0c206c37adb1c2a2fb67e3f8034aa0