Bump software.amazon.awssdk:bom from 2.28.6 to 2.28.11

Bumps software.amazon.awssdk:bom from 2.28.6 to 2.28.11.

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

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

build.gradle.kts

@@ -107,7 +107,7 @@ dependencies {
         api("org.springframework.cloud:spring-cloud-dependencies:2023.0.3")
         api("org.testcontainers:junit-jupiter:1.20.1")
         api("org.mockito:mockito-inline:5.2.0")
-        api("software.amazon.awssdk:bom:2.28.6")
+        api("software.amazon.awssdk:bom:2.28.11")
         api("uk.org.webcompere:system-stubs-jupiter:2.1.6")
         api("org.web3j:core:4.12.0")
     }