feat: plugin text columns are longtext on mysql so they are not capped at 64KB

packages/plugin-sdk/CHANGELOG.md

@@ -7,6 +7,7 @@
 - `execCommand` timeout errors no longer include the command, which could hold a sudo password
 - `termix-plugin validate` fails when a plugin ships migrations for some database engines but not all three
 - `termix-plugin migrations` loads the table definitions from a path with a `#` or other URL characters in it
+- Text, json and encrypted columns are `longtext` on MySQL in new migrations, so they are no longer capped at 64KB. Existing migrations keep `text`
 - `i18next`, `react-dom`, `react-i18next` and `sonner` are optional peer dependencies, so npm stops installing them into backend-only plugins
 
 ## 1.0.4