Bump com.amazonaws:aws-java-sdk-s3 in /reposilite-backend

Bumps [com.amazonaws:aws-java-sdk-s3](https://github.com/aws/aws-sdk-java) from 1.12.486 to 1.12.519.
- [Changelog](https://github.com/aws/aws-sdk-java/blob/master/CHANGELOG.md)
- [Commits](aws/aws-sdk-java@1.12.486...1.12.519)

---
updated-dependencies:
- dependency-name: com.amazonaws:aws-java-sdk-s3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

reposilite-backend/build.gradle.kts

@@ -73,7 +73,7 @@ dependencies {
     implementation(platform("software.amazon.awssdk:bom:$awssdk"))
     implementation("software.amazon.awssdk:s3:$awssdk")
 
-    val awsSdkV1 = "1.12.486"
+    val awsSdkV1 = "1.12.519"
     testImplementation("com.amazonaws:aws-java-sdk-s3:$awsSdkV1")
 
     val exposed = "0.41.1"