chore(deps): bump github.com/spf13/viper from 1.16.0 to 1.18.2 (#339)

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.16.0 to 1.18.2.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.16.0...v1.18.2)

---
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

@@ -1,14 +1,14 @@
 module github.com/hipages/php-fpm_exporter
 
 require (
-	github.com/davecgh/go-spew v1.1.1
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc
 	github.com/gosuri/uitable v0.0.4
 	github.com/mattn/go-runewidth v0.0.8 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/prometheus/client_golang v1.17.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/spf13/cobra v1.8.0
-	github.com/spf13/viper v1.16.0
+	github.com/spf13/viper v1.18.2
 	github.com/stretchr/testify v1.8.4
 	github.com/tomasen/fcgi_client v0.0.0-20180423082037-2bb3d819fd19
 )