[submodule] update sonic-py-swsssdk and sonic-snmpagent (#7061)

Included commits in sonic-py-swsssdk
```
63c75c1 2021-03-14 | Workaround Mellanox default vlan has no SAI_VLAN_ATTR_VLAN_ID attribute (#103) [Qi Luo]
```

Included commits in sonic-snmpagent
```
a8c6e36 2021-03-15 | Implement rfc4363 FdbUpdater for lag inside vlan (#204) [Qi Luo]
```
This commit is contained in:
Qi Luo 2021-03-16 04:49:40 -07:00 committed by GitHub
parent 7c5f0ff316
commit 385e7265ce
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2 changed files with 2 additions and 2 deletions

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Subproject commit 4e0c56108d40827db7f2c04fd3f70b239c7e5970
Subproject commit 63c75c157cbee7cb1b5b8e1d176653c71868911f

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Subproject commit d81828c6740f2d4fca59fe3ec1d0adb1088a9dbb
Subproject commit a8c6e360eb572ff79bde088ed09057153c5bc440