Drone: Add apps directory for backend tests (#100204)

scripts/drone/events/pr.star

@@ -116,6 +116,7 @@ def pr_pipelines():
                     "public/app/plugins/**/plugin.json",
                     "docs/sources/setup-grafana/configure-grafana/feature-toggles/**",
                     "devenv/**",
+                    "apps/**",
                 ],
             ),
             ver_mode,
@@ -134,6 +135,7 @@ def pr_pipelines():
                     "public/app/plugins/**/plugin.json",
                     "devenv/**",
                     ".bingo/**",
+                    "apps/**",
                 ],
             ),
             ver_mode,