Bump software.amazon.awssdk:auth in /performance-test (opensearch-pro…

…ject#4685)

Bumps software.amazon.awssdk:auth from 2.25.21 to 2.26.12.

---
updated-dependencies:
- dependency-name: software.amazon.awssdk:auth
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

performance-test/build.gradle

@@ -15,7 +15,7 @@ configurations.all {
 group 'org.opensearch.dataprepper.test.performance'
 
 dependencies {
-    gatlingImplementation 'software.amazon.awssdk:auth:2.25.21'
+    gatlingImplementation 'software.amazon.awssdk:auth:2.26.12'
     implementation 'com.fasterxml.jackson.core:jackson-core'
     testRuntimeOnly testLibs.junit.engine