Revert "tests: remove duplicate healthchecks, bump grafana and dex"

This reverts commit df9d8e9d25.

tests/e2e/test_provider_oauth2_oidc.py

@@ -6,6 +6,7 @@ from unittest.case import skipUnless
 
 from docker import DockerClient, from_env
 from docker.models.containers import Container
+from docker.types import Healthcheck
 from selenium.webdriver.common.by import By
 from selenium.webdriver.support import expected_conditions as ec
 
@@ -44,6 +45,11 @@ class TestProviderOAuth2OIDC(SeleniumTestCase):
             detach=True,
             network_mode="host",
             auto_remove=True,
+            healthcheck=Healthcheck(
+                test=["CMD", "wget", "--spider", "http://localhost:9009/health"],
+                interval=5 * 100 * 1000000,
+                start_period=1 * 100 * 1000000,
+            ),
             environment={
                 "OIDC_CLIENT_ID": self.client_id,
                 "OIDC_CLIENT_SECRET": self.client_secret,