build(deps): bump github.com/spf13/viper from 1.15.0 to 1.16.0 (#1215)

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>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/pquerna/otp v1.4.0
 	github.com/shopspring/decimal v1.3.1
-	github.com/spf13/viper v1.15.0
+	github.com/spf13/viper v1.16.0
 	github.com/thrasher-corp/gct-ta v0.0.0-20200623072738-f2b55b7f9f41
 	github.com/thrasher-corp/goose v2.7.0-rc4.0.20191002032028-0f2c2a27abdb+incompatible
 	github.com/thrasher-corp/sqlboiler v1.0.1-0.20191001234224-71e17f37a85e
@@ -39,10 +39,10 @@ require (
 	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/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/spf13/afero v1.9.3 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
+	github.com/spf13/afero v1.9.5 // indirect
+	github.com/spf13/cast v1.5.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/subosito/gotenv v1.4.2 // indirect