chore(deps): bump com.amazonaws:aws-java-sdk-sts

Bumps [com.amazonaws:aws-java-sdk-sts](https:/aws/aws-sdk-java) from 1.12.729 to 1.12.770.
- [Changelog](https:/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.729...1.12.770)

---
updated-dependencies:
- dependency-name: com.amazonaws:aws-java-sdk-sts
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -82,7 +82,7 @@ ext {
  aivenConnectCommonsVersion = "0.12.0"
 
  amazonS3Version = "1.12.729"
- amazonSTSVersion = "1.12.729"
+ amazonSTSVersion = "1.12.770"
  slf4jVersion = "1.7.36"
  junitVersion = "5.10.2"
  testcontainersVersion = "1.19.8"