[BUMP] Update dependency privatebin/privatebin to v2 (bin)

[renovate]

This PR contains the following updates:

Package	Update	Change
privatebin/privatebin	major	1.7.8 -> 2.0.0

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Release Notes

privatebin/privatebin (privatebin/privatebin)

v2.0.0

Compare Source

• ADDED: Error logging in database and filesystem backend (#​1554)
• ADDED: Statistics on v1 pastes in administration script and option to delete them
• CHANGED: Removed page template (#​265)
• CHANGED: Removed support for ZeroBin & v1 pastes - since release 1.3 the v2 format is used (#​551)
• CHANGED: Removed use of base64 & rawinflate libraries (#​551)
• CHANGED: Removed support for privatebin_data, privatebin_db & zerobin_db model class configurations, must be replaced with Filesystem or Database in cfg/conf.php, if still present
• CHANGED: Removed unused columns in database schema of tables paste & comment
• CHANGED: Jdenticons are now used as the default icons
• CHANGED: Upgrading libraries to: base-x 5.0.1, bootstrap 5.3.7, jdenticon 2.0.0 & kjua 0.10.0
• CHANGED: Minimum required PHP version is 7.4, due to a change in the jdenticon library
• CHANGED: Set bootstrap5 template as default for PrivateBin (#​1572)
• CHANGED: Switched from binary bytes to SI-units (#​1565)
• CHANGED: Replaced the term "paste" with the more generic "document" (#​397)
• FIXED: Name mismatches in attached files (#​1584)
• FIXED: Unable to paste attachments from clipboard (#​1589)
• FIXED: Configuration combinations test errors

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