ssci: use canonical date format

This CL replaces different date representations in README.chromium files
to use the canonical YYYY-MM-DD format (for dates that can be parsed).

Change-Id: I9252c8726aeaf872363879f747b1daefc4043a68
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5903138
Reviewed-by: Rachael Newitt <[email protected]>
Reviewed-by: Nico Weber <[email protected]>
Commit-Queue: Jiewei Qian <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1363402}
NOKEYCHECK=True
GitOrigin-RevId: 3d5f57a6a73f6fca3b6fefb77407af65fa9696f5
1 file changed
tree: b0087e706dc58c268e964bbaadf1d867e52d3fed
  1. development/
  2. DIR_METADATA
  3. LICENSE
  4. OWNERS
  5. README.chromium