Bump amazonAwsJavaSdkVersion from 1.12.777 to 1.12.778

Bumps `amazonAwsJavaSdkVersion` from 1.12.777 to 1.12.778.

Updates `com.amazonaws:aws-java-sdk-core` from 1.12.777 to 1.12.778
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.777...1.12.778)

Updates `com.amazonaws:aws-java-sdk-xray` from 1.12.777 to 1.12.778
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.777...1.12.778)

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

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

lambda/build.gradle

@@ -1,7 +1,7 @@
 buildscript {
     ext {
         awsSdkVersion = '2.29.9'
-        amazonAwsJavaSdkVersion = '1.12.777'
+        amazonAwsJavaSdkVersion = '1.12.778'
     }
 }