Upgrade PublishCodeCoverageResults@1 to PublishCodeCoverageResults@2

[Tanya-Solyanik]

Update the build.yml file to use PublishCodeCoverageResults@2 task.

Currently we are getting warnings in CI in Initialize job:

Downloading task: PublishCodeCoverageResults (1.248.1)
##[warning]Task 'Publish code coverage' version 1 (PublishCodeCoverageResults@1) is deprecated.
##[warning]The PublishCodeCoverageResults@1 is deprecated. Users are recommended to switch to task version 2. For more details, see https://devblogs.microsoft.com/devops/new-pccr-task
Downloading task: PublishBuildArtifacts (1.247.1)
Downloading task: PublishTestResults (2.247.1)

Details https://devblogs.microsoft.com/devops/new-pccr-task/