chore(deps): bump github.com/spf13/viper from 1.6.1 to 1.7.1

[dependabot-preview]

Bumps github.com/spf13/viper from 1.6.1 to 1.7.1.

Release notes

Sourced from github.com/spf13/viper's releases.

v1.7.1

This release contains a bugfix for environment variable expansion. See #495 and #940 for details.

v1.7.0

This release mostly contains bug and security fixes, but there are a few new features as well:

• The unmaintained https://github.com/spf13/viper/blob/HEAD/github.com/xordataexchange/crypt has been replaced with https://github.com/spf13/viper/blob/HEAD/github.com/bketelsen/crypt
• Added firestore support as a remote config source (thanks @alxmsl)

v1.6.3

Fixes uninstallable library on clean GOPATH

Fix extensionless config lookup

This is a patch release fixing a(n edge case) bug introduced in v1.6.0

See #818 and #827 for details

Commits

• 3826be3 Simplify $HOME prefix check
• ce53404 Fix environment variable expansion in absPathify
• 13494e8 Skipping error != nil checks in favor of the fast return.
• 13df721 Add Go 1.14 to build targets
• 3856c05 Fix: Getting the value of a StringToString pflag (#874)
• c6ee980 fix_ini_save_error
• c42a305 Update gorilla dependency (#899)
• e34fb51 Add mentioned in awesome badge
• 7eea371 Remove go version badge
• aa8e4d4 Update badges and logo
• Additional commits viewable in compare view

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