[CodeHealth] Bump some scripts to pylint 2.6

And fix the lint warnings.

Bug: 1223892
Change-Id: Iadb7e59a6baf9c2f7abd92b1db81995d44cbf4fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3110310
Commit-Queue: Dirk Pranke <dpranke@google.com>
Auto-Submit: Victor Vianna <victorvianna@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/main@{#917422}
NOKEYCHECK=True
GitOrigin-RevId: 0686307eed463d6f49515eea665aac8f64291071
4 files changed
tree: 249d865a5f685a37b66f4a5d4bb62ea3342c53f0
  1. development/
  2. DIR_METADATA
  3. LICENSE
  4. OWNERS
  5. README.chromium