[chore] bumps our spf13/viper version (#3943)

* bumps our spf13/viper version

* fixes the one breaking change

vendor/github.com/spf13/viper/util.go

@@ -12,13 +12,13 @@ package viper
 
 import (
 	"fmt"
+	"log/slog"
 	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
 	"unicode"
 
-	slog "github.com/sagikazarmark/slog-shim"
 	"github.com/spf13/cast"
 )
 
@@ -128,15 +128,6 @@ func absPathify(logger *slog.Logger, inPath string) string {
 	return ""
 }
 
-func stringInSlice(a string, list []string) bool {
-	for _, b := range list {
-		if b == a {
-			return true
-		}
-	}
-	return false
-}
-
 func userHomeDir() string {
 	if runtime.GOOS == "windows" {
 		home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")