Revert from bom deps. Set duplicatesStrategy for benchmark project

[srprash]

Issue:
#334 introduced aws-java-sdk dependencies version to be specified using aws-java-sdk-bom in the dependencyManagement which would then resolve any AWS JAVA SDK dependency across all projects in the repo.
The ./gradlew build builds successfully from the root, however, ./gradle jmh (used for running benchmarks) fails to resolve dependency with the following message:

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':aws-xray-recorder-sdk-benchmark:jmhJar'.
> Could not resolve all files for configuration ':aws-xray-recorder-sdk-benchmark:jmhRuntime'.
   > Could not find com.amazonaws:aws-java-sdk-xray:.
     Required by:
         project :aws-xray-recorder-sdk-benchmark > project :aws-xray-recorder-sdk-core

Description of changes:

• Partially reverting the changes in Upgrade AWS Java SDK to 1.12.228 #334 to specify version 1.12.228 for each of the aws-java-sdk dependencies and remove the declaration of aws-java-sdk-bom.
  This is a temporary measure to not have a broken project and in the future we should try and find a way to define the dependency version through bom in a single place.

• From Gradle 7, it is required to specify a duplicatesStrategy. No doing so will result in this error when running ./gradlew jmh:

  > Task :aws-xray-recorder-sdk-benchmark:jmhJar FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':aws-xray-recorder-sdk-benchmark:jmhJar'.
  > Entry LICENSE is a duplicate but no duplicate handling strategy has been set. Please refer to 
  https://docs.gradle.org/7.4.2/dsl/org.gradle.api.tasks.Copy.html#org.gradle.api.tasks.Copy:duplicatesStrategy for details.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #336 (c5e97b7) into master (5730d71) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #336   +/-   ##
=========================================
  Coverage     58.92%   58.92%           
  Complexity     1206     1206           
=========================================
  Files           131      131           
  Lines          5066     5066           
  Branches        593      593           
=========================================
  Hits           2985     2985           
  Misses         1806     1806           
  Partials        275      275           

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[NathanielRN]

Thank you! Added a few formatting suggestions.