Update H2 to 2.x

[php-coder]

• 2.0.202
  • https://github.com/h2database/h2database/releases/tag/version-2.0.202
  • security release: GHSA-7rpj-hg47-cx62
• 2.0.204
• 2.0.206
  • security release: GHSA-h376-j262-vhq6
• 2.1.210
  • security release: GHSA-45hx-wfhj-473x
• 2.1.212
• 2.1.214
• 2.2.220
  • security release: GHSA-22wj-vf5f-wrvj
• 2.2.222
• 2.2.224

See http://www.h2database.com/html/changelog.html

TODO:

• check CSP rules
• check whether NOT NULL constraint retain after migration (MySQL)
• simplify sql query to use substring() instead of like
• document column renaming (and add a link to https://github.com/h2database/h2database/issues/3954)