chore(deps): update ghcr.io/flaresolverr/flaresolverr docker tag to v3.3.21

This MR contains the following updates:

Package	Update	Change
ghcr.io/flaresolverr/flaresolverr	patch	v3.3.6 -> v3.3.21

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Release Notes

FlareSolverr/FlareSolverr (ghcr.io/flaresolverr/flaresolverr)

v3.3.21

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• Add challenge selector to catch reloading page on non-English systems
• Escape values for generated form used in request.post. Thanks @​mynameisbogdan

v3.3.20

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• maxTimeout should always be int
• Check not running in Docker before logging version_main error
• Update Cloudflare challenge and checkbox selectors. Thanks @​tenettow & @​21hsmw

v3.3.19

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• Fix occasional headless issue on Linux when set to "false". Thanks @​21hsmw

v3.3.18

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• Fix LANG ENV for Linux
• Fix Chrome v124+ not closing on Windows. Thanks @​RileyXX

v3.3.17

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• Fix file descriptor leak in service on quit(). Thanks @​zkulis

v3.3.16

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• Fix of the subprocess.STARTUPINFO() call. Thanks @​ceconelo
• Add FreeBSD support. Thanks @​Asthowen
• Use headless configuration properly. Thanks @​hashworks

v3.3.15

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• Fix looping challenges

v3.3.14

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• Hotfix 2 - bad Chromium build, instances failed to terminate

v3.3.13

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• Fix too many open files error

v3.3.12

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• Fix looping challenges and invalid cookies

v3.3.11

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• Update UC 3.5.4 & Selenium 4.15.2. Thanks @​txtsd

v3.3.10

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• Add LANG ENV - resolves issues with YGGtorrent

v3.3.9

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• Fix for Docker build, capture TypeError

v3.3.8

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• Fix headless=true for Chrome 117+. Thanks @​NabiKAZ
• Support running Chrome 119 from source. Thanks @​koleg and @​Chris7X
• Fix "OSError: [WinError 6] The handle is invalid" on exit. Thanks @​enesgorkemgenc

v3.3.7

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• Bump to rebuild. Thanks @​JoachimDorchies

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