v1.4.1

Security Patch - addresses SQL injection as described in #295

What's Changed

• Update dir in pgxn-release by @ChuckHend in #285
• Update release pgxn by @ChuckHend in #287
• doc updates: rust transaction example, readme updates by @ChuckHend in #289
• Update contrib guide by @ChuckHend in #292
• use Identifier format instead of string format by @ChuckHend in #296
• fix typo in part config assignment by @ChuckHend in #297

Full Changelog: v1.4.0...v1.4.1