v1.50: Add some bots and improve pattern matching

What's Changed

• Pass commit messages to bash via env, not template interpolation by @INXPRNCD in #254
• Fill "Unclear at this time." from primary operator docs for 6 entries by @INXPRNCD in #255
• robots.py: duplicate parser = argparse.ArgumentParser(...) by @guest20 in #256
• do not needlessly escape hypens, make nginx matches case-sensitive, further minify regexps by @girst in #259
• fix lighttpd config for 1.x by @girst in #261
• fix(code): unanchor PCRE patterns to allow matching real user-agent headers (#257) by @Ilyan321 in #260
• Add Bot Ledger to Related resources by @farrelldan in #262
• add Lightpanda user agent by @acook in #263

New Contributors

• @girst made their first contribution in #259
• @Ilyan321 made their first contribution in #260
• @farrelldan made their first contribution in #262
• @acook made their first contribution in #263

Full Changelog: v1.49...v1.50