Fix ESRP publish stage condition to use stageDependencies expression

[Copilot]

The Publish stage's condition referenced job outputs using the dependencies. syntax, which is only valid at the job level. At the stage level, this expression silently evaluates to false, causing the stage to be skipped even when the version bump merge check should pass.

Fix

• Changed the condition on the Publish${{ parameters.StageNameSuffix }} stage to use stageDependencies.Prepare${{ parameters.StageNameSuffix }}.PrepareNpmPublish.outputs['FindBumpRun.IsVersionBumpMerge'], matching the syntax already used for the BumpPipelineRunId/BumpPipelineDefinitionId variables defined later in the same job.

# before
condition: and(succeeded('Prepare${{ parameters.StageNameSuffix }}'), eq(dependencies.Prepare${{ parameters.StageNameSuffix }}.outputs['PrepareNpmPublish.FindBumpRun.IsVersionBumpMerge'], 'true'))

# after
condition: and(succeeded('Prepare${{ parameters.StageNameSuffix }}'), eq(stageDependencies.Prepare${{ parameters.StageNameSuffix }}.PrepareNpmPublish.outputs['FindBumpRun.IsVersionBumpMerge'], 'true'))