pre-merge tests: bump prometheus/promtool version to 2.33.3
pre-merge tests: bump prometheus/promtool version to 2.33.3

to match new prometheus boshrelease version

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf