build(deps): bump github.com/spf13/viper from 1.15.0 to 1.16.0 in /proxy (#79)

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.15.0 to 1.16.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.15.0...v1.16.0)

---
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>

proxy/go.mod

@@ -5,23 +5,23 @@ go 1.17
 require (
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510
 	github.com/gorilla/handlers v1.5.1
+	github.com/magiconair/properties v1.8.7
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.15.0
+	github.com/spf13/viper v1.16.0
 )
 
 require (
 	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
-	github.com/spf13/afero v1.9.3 // indirect
+	github.com/spf13/afero v1.9.5 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
+	github.com/spf13/cast v1.5.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/subosito/gotenv v1.4.2 // indirect
-	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect