Always request the concise output format during ecosystem checks (#9708)

Fixes a regression in the ecosystem checks from
https://github.com/astral-sh/ruff/pull/9687 which was causing them to
run for multiple hours due to the size of the output.

We need the concise format for comparisons.

We should probably update the ecosystem checks to actually diff the full
output in the future because that'd be nice.
# Conflicts:
#	python/ruff-ecosystem/ruff_ecosystem/projects.py

python/ruff-ecosystem/ruff_ecosystem/projects.py

@@ -209,6 +209,9 @@ class CheckOptions(CommandOptions):
             # Ignore internal test rules
             "--ignore",
             "RUF9",
+            # Use the concise format for comparing violations
+            "--output-format",
+            "concise",
             f"--{'' if self.preview else 'no-'}preview",
         ]
         if self.select: