Bump github.com/census-instrumentation/opencensus-proto (#381)

Bumps [github.com/census-instrumentation/opencensus-proto](https://github.com/census-instrumentation/opencensus-proto) from 0.2.1 to 0.3.0.
- [Release notes](https://github.com/census-instrumentation/opencensus-proto/releases)
- [Commits](https://github.com/census-instrumentation/opencensus-proto/compare/v0.2.1...v0.3.0

)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/Azure/go-autorest/autorest v0.10.0 // indirect
 	github.com/appscode/jsonpatch v0.0.0-20190108182946-7c0e3b262f30
 	github.com/beorn7/perks v1.0.1
-	github.com/census-instrumentation/opencensus-proto v0.2.1
+	github.com/census-instrumentation/opencensus-proto v0.3.0
 	github.com/davecgh/go-spew v1.1.1
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/evanphx/json-patch v4.5.0+incompatible

go.sum

@@ -94,6 +94,8 @@ github.com/census-instrumentation/opencensus-proto v0.2.0 h1:LzQXZOgg4CQfE6bFvXG
 github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.2.1 h1:glEXhBS5PSLLv4IXzLA5yPRVX4bilULVyxxbrfOtDAk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/census-instrumentation/opencensus-proto v0.3.0 h1:t/LhUZLVitR1Ow2YOnduCsavhwFUklBMoGVYUCqmCqk=
+github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=