fix(deps): update module github.com/go-kivik/couchdb/v3 to v3.4.0 (#409)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -4,7 +4,7 @@ go 1.13
 
 require (
 	github.com/Masterminds/semver v1.5.0
-	github.com/go-kivik/couchdb/v3 v3.3.0
+	github.com/go-kivik/couchdb/v3 v3.4.0
 	github.com/go-kivik/kivik/v3 v3.2.4
 	github.com/go-redis/redis/v7 v7.4.1
 	github.com/h2non/filetype v1.1.3