[chore]: Bump github.com/spf13/viper from 1.14.0 to 1.15.0 (#1375)

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.14.0 to 1.15.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.14.0...v1.15.0)

---
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>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/magiconair/properties/properties.go

@@ -1,4 +1,4 @@
-// Copyright 2018 Frank Schroeder. All rights reserved.
+// Copyright 2013-2022 Frank Schroeder. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -700,22 +700,17 @@ func (p *Properties) Delete(key string) {
 
 // Merge merges properties, comments and keys from other *Properties into p
 func (p *Properties) Merge(other *Properties) {
+	for _, k := range other.k {
+		if _, ok := p.m[k]; !ok {
+			p.k = append(p.k, k)
+		}
+	}
 	for k, v := range other.m {
 		p.m[k] = v
 	}
 	for k, v := range other.c {
 		p.c[k] = v
 	}
-
-outer:
-	for _, otherKey := range other.k {
-		for _, key := range p.k {
-			if otherKey == key {
-				continue outer
-			}
-		}
-		p.k = append(p.k, otherKey)
-	}
 }
 
 // ----------------------------------------------------------------------------