Updating offset pagination strategy to parse numeric strings as integers

[galvana]

Purpose

ConnectionConfig secret values might be stored as strings, but when these values are used in the offset pagination strategy, they need to be converted back to integers. This update casts numeric strings to integers or throws a validation error if the string cannot be cast to an integer.

Changes

• Added str to int conversion in the offset pagination strategy and added the appropriate tests

Checklist

• Update CHANGELOG.md file
  • Merge in main so the most recent CHANGELOG.md file is being appended to
  • Add description within the Unreleased section in an appropriate category. Add a new category from the list at the top of the file if the needed one isn't already there.
• Good unit test/integration test coverage
• The Run Unsafe PR Checks label has been applied, and checks have passed, if this PR touches any external services

[adamsachs]

lgtm

[eastandwestwind]

Looks good, thanks for the thorough tests as well @galvana !