[chore] update viper version (#2539)

* update viper version

* removes our last uses of the slice package

* fix tests

vendor/github.com/sagikazarmark/locafero/.golangci.yaml

@@ -0,0 +1,27 @@
+run:
+  timeout: 10m
+
+linters-settings:
+  gci:
+    sections:
+      - standard
+      - default
+      - prefix(github.com/sagikazarmark/locafero)
+  goimports:
+    local-prefixes: github.com/sagikazarmark/locafero
+  misspell:
+    locale: US
+  nolintlint:
+    allow-leading-space: false # require machine-readable nolint directives (with no leading space)
+    allow-unused: false # report any unused nolint directives
+    require-specific: false # don't require nolint directives to be specific about which linter is being skipped
+  revive:
+    confidence: 0
+
+linters:
+  enable:
+    - gci
+    - goimports
+    - misspell
+    - nolintlint
+    - revive