Byron: Force startTime in genesis data to be strict

[aniketd]

Description

Closes #3598

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated
• All visible changes are prepended to the latest section of a CHANGELOG.md for the affected packages.
  New section is never added with the code changes. (See RELEASING.md)
• When applicable, versions are updated in .cabal and CHANGELOG.md files according to the
  versioning process.
• The version bounds in .cabal files for all affected packages are updated.
  If you change the bounds in a cabal file, that package itself must have a version increase. (See RELEASING.md)
• Code is formatted with fourmolu (use scripts/fourmolize.sh)
• Cabal files are formatted (use scripts/cabal-format.sh)
• hie.yaml has been updated (use scripts/gen-hie.sh)
• Self-reviewed the diff

[lehins]

In order for this change to get released we need a version bump. Please, bump the minor version to 1.0.2.0 and add a changelog entry about this change

[aniketd]

I have switched to using force and that dismissed the requirement to depend on deepseq directly. I have also updated the version and added the change-log entry.

[lehins]

👍