Run E2Es with --hide-summary output

Apparently without this flag E2Es will pass if a test is re-run several
times and fails several times. I've seen this on 2-3 E2E runs.

See gotestyourself/gotestsum#423

Signed-off-by: Nic Cope <[email protected]>

Author: negz

Earthfile

@@ -74,6 +74,7 @@ e2e:
       # https://github.com/earthly/earthly/issues/4143 is fixed.
       RUN gotestsum \
         --rerun-fails \
+	--hide-summary output \ # See https://github.com/gotestyourself/gotestsum/issues/423
       	--no-color=false \
 	--format ${GOTESTSUM_FORMAT} \
 	--junitfile e2e-tests.xml \