HSEARCH-5179 Bump software.amazon.awssdk:auth from 2.25.2 to 2.26.4

Bumps software.amazon.awssdk:auth from 2.25.2 to 2.26.4.

---
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]>

Author: dependabot[bot]

build/parents/build/pom.xml

@@ -81,7 +81,7 @@
         <documentation.org.opensearch.url>https://opensearch.org/docs/${parsed-version.org.opensearch.compatible.main.majorVersion}.${parsed-version.org.opensearch.compatible.main.minorVersion}</documentation.org.opensearch.url>
 
         <version.com.google.code.gson>2.11.0</version.com.google.code.gson>
-        <version.software.amazon.awssdk>2.25.2</version.software.amazon.awssdk>
+        <version.software.amazon.awssdk>2.26.4</version.software.amazon.awssdk>
         <!-- Jackson: used by the Elasticsearch REST client, by Avro, by the AWS SDK and in tests (wiremock, ...) -->
         <version.com.fasterxml.jackson>2.17.1</version.com.fasterxml.jackson>
         <!-- slf4j: used by the AWS SDK -->