Bump aws.sdk.version from 2.25.64 to 2.26.15

Bumps `aws.sdk.version` from 2.25.64 to 2.26.15.

Updates `software.amazon.awssdk:sts` from 2.25.64 to 2.26.15

Updates `software.amazon.awssdk:ssm` from 2.25.64 to 2.26.15

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

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -46,7 +46,7 @@
     <KeePassJava2.version>2.2.1</KeePassJava2.version>
     <asciidoctor.maven.plugin.version>3.0.0</asciidoctor.maven.plugin.version>
     <asciidoctorj.version>2.5.13</asciidoctorj.version>
-    <aws.sdk.version>2.25.64</aws.sdk.version>
+    <aws.sdk.version>2.26.15</aws.sdk.version>
     <bootstrap.version>5.3.3</bootstrap.version>
     <com.azure.spring.version>5.13.0</com.azure.spring.version>
     <cyclonedx.core.version>9.0.4</cyclonedx.core.version>