fix: Make MySQL migration for nano id change compatible with version 5.7 (#6498)

* fix: Make migration for MySQL compatible with version 5.7

* fix: Correct syntax

* fix: Syntax for primary key creation

* fix: Remove unnecessary constraint statement

* fix: Name columns for sqlite migration to prevent issues

* ci: Always run DB tests with table-prefix and alt-schema

* add tablePrefix to migrations (mysql not fixed)

* fix character_set on mysql migrations

* fix mysql collation version difference

* cater for mariadb collations

---------

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
Co-authored-by: Michael Auerswald <michael.auerswald@gmail.com>

packages/cli/package.json

@@ -37,8 +37,6 @@
     "test": "pnpm test:sqlite",
     "test:sqlite": "N8N_LOG_LEVEL=silent DB_TYPE=sqlite jest",
     "test:postgres": "N8N_LOG_LEVEL=silent DB_TYPE=postgresdb jest --no-coverage",
-    "test:postgres:alt-schema": "DB_POSTGRESDB_SCHEMA=alt_schema pnpm test:postgres",
-    "test:postgres:with-table-prefix": "DB_TABLE_PREFIX=xyz_ pnpm test:postgres",
     "test:mysql": "N8N_LOG_LEVEL=silent DB_TYPE=mysqldb jest --no-coverage",
     "watch": "concurrently \"tsc -w -p tsconfig.build.json\" \"tsc-alias -w -p tsconfig.build.json\"",
     "typeorm": "ts-node -T ../../node_modules/typeorm/cli.js"