Bump github.com/spf13/viper from 1.7.1 to 1.8.0 (#2987)

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.7.1 to 1.8.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](spf13/viper@v1.7.1...v1.8.0)

---
updated-dependencies:
- dependency-name: github.com/spf13/viper
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -77,7 +77,7 @@ require (
 	github.com/soheilhy/cmux v0.1.5
 	github.com/spf13/cobra v1.1.3
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.7.1
+	github.com/spf13/viper v1.8.0
 	github.com/srwiley/oksvg v0.0.0-20210320200257-875f767ac39a
 	github.com/srwiley/rasterx v0.0.0-20200120212402-85cb7272f5e9
 	github.com/stretchr/testify v1.7.0
@@ -87,8 +87,8 @@ require (
 	github.com/yvasiyarov/gorelic v0.0.6 // indirect
 	github.com/yvasiyarov/newrelic_platform_go v0.0.0-20160601141957-9c099fbc30e9 // indirect
 	golang.org/x/image v0.0.0-20201208152932-35266b937fa6 // indirect
-	golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4
-	google.golang.org/genproto v0.0.0-20210426193834-eac7f76ac494
+	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
+	google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c
 	google.golang.org/grpc v1.38.0
 	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0
 	google.golang.org/protobuf v1.26.0