[Submodule]: update sonic-restapi (#10293)

bd97dfe Fix urllib3 CVE-2021-33503 issue (#104)
f159bfa Upgrade the containers to be based on Debian Buster (#103)
a1830c1 Fix OpenAPI spec to be readable by autorest (#101)
94805a3 Identify and report Vnet GUID for conflicting VNI (#99)
4832dfd Static route expiry if not specified as persistent (#98)
5cc4358 Add support for overlay ECMP (#96)
6822a46 [CI] Set diff cover threshold to 50% (#97)
dcc826a Add PR diff coverage (#95)