Add SPEC_TO_RUN to concourse filter whitelist
Add SPEC_TO_RUN to concourse filter whitelist

[#128038243]

Signed-off-by: James Wen <3b2f4c88287a5fcd7db73a67dd1ab82807db04ee@columbia.edu>

orange-cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,orange-cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,orange-cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci