Switch from flake8 to ruff

[dolfinus]

Change Summary

Ruff is used in Data.Rentgen and Horizon, let's use it in SyncMaster as well.

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
syncmaster/db/repositories
base.py	67	3	95%	34, 65, 75
connection.py	65	10	84%	83–84, 105–106, 114–115, 136, 138, 140, 143
group.py	145	10	93%	162–163, 199, 249–250, 379–382, 390
run.py	62	8	87%	66–67, 74–75, 133–136
search.py	43	2	95%	36, 52
transfer.py	91	14	84%	105–106, 145–146, 183–184, 192–193, 230, 232, 238, 241, 244, 249
user.py	50	14	72%	40–41, 51–56, 82–83, 88, 90–91, 93
syncmaster/dto
transfers.py	114	2	98%	94–95
syncmaster/scheduler
transfer_job_manager.py	58	11	81%	53–54, 56, 60, 63–64, 66–68, 89–90
syncmaster/schemas/v1/connections
iceberg.py	48	1	97%	82
syncmaster/server
handler.py	157	25	84%	57, 62, 70, 72, 76, 81, 91, 116, 122–124, 214–216, 230–231, 245–246, 319–321, 333–336
syncmaster/server/middlewares
openapi.py	50	24	52%	19–21, 23–25, 27, 31–32, 34, 50, 56–57, 61–65, 76, 80–84
syncmaster/server/providers/auth
dummy_provider.py	64	27	57%	29–30, 57–59, 61–66, 68–71, 73–75, 82–83, 87, 92, 102–104, 113, 117
keycloak_provider.py	89	20	77%	29–31, 67, 83–85, 116–118, 121–122, 129–130, 159–160, 164–167
oauth2_gateway_provider.py	58	17	70%	26–28, 52–54, 58–61, 72–73, 83–84, 102, 114, 120
syncmaster/server/services
get_user.py	31	3	90%	47, 57–58
syncmaster/worker
controller.py	92	1	98%	263
spark.py	52	2	96%	79–80
syncmaster/worker/handlers/file
local_df.py	65	2	96%	51, 55
remote_df.py	27	2	92%	32, 36
TOTAL	5117	320	93%