remove benchmark test event filter in validations pipeline

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

.github/workflows/validations.yaml

@@ -167,9 +167,9 @@ jobs:
   Benchmark-Test:
     name: "Benchmark tests"
     runs-on: ubuntu-20.04
-    # run only on push event (internal PRs) or on a pull_request event that is from a fork (external PR)
-    # skip if this is a pull_request event on an internal PR (which is already covered by push events)
-    if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
+    # note: we want benchmarks to run on pull_request events in order to publish results to a sticky comment, and
+    # we also want to run on push such that merges to main are recorded to the cache. For this reason we don't filter
+    # the job by event.
     steps:
       - uses: actions/setup-go@v2
         with: