Removed dependency between "test" and "jacocoTestReport"

Closes issue opensearch-project#2913.

This will allow us to not to exclude the "test" job from every other test.

Unfortunately, this will break creating the coverage reports from only starting "jacocoTestReport" task in Gradle.

.github/workflows/ci.yml

@@ -51,7 +51,6 @@ jobs:
       with:
         arguments: |
           ${{ matrix.gradle_task }} -Dbuild.snapshot=false
-          -x test
 
     - name: Coverage
       uses: codecov/codecov-action@v1

build.gradle

@@ -390,8 +390,6 @@ tasks.withType(JavaCompile) {
 }
 
 tasks.test.finalizedBy(jacocoTestReport)  // report is always generated after tests run
-tasks.jacocoTestReport.dependsOn(test) // tests are required to run before generating the report
-
 
 allprojects {
     tasks.withType(Javadoc).all { enabled = false }