chore(deps): bump software.amazon.awssdk:bom

Bumps software.amazon.awssdk:bom from 2.26.25 to 2.28.22.

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

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

Author: dependabot[bot]

DynamoDbEncryption/runtimes/java/build.gradle.kts

@@ -83,7 +83,7 @@ dependencies {
     implementation("software.amazon.smithy.dafny:conversion:${smithyDafnyJavaConversionVersion}")
     implementation("software.amazon.cryptography:aws-cryptographic-material-providers:${mplVersion}")
 
-    implementation(platform("software.amazon.awssdk:bom:2.26.25"))
+    implementation(platform("software.amazon.awssdk:bom:2.28.22"))
     implementation("software.amazon.awssdk:dynamodb")
     implementation("software.amazon.awssdk:dynamodb-enhanced")
     implementation("software.amazon.awssdk:kms")