Support Ruby 3.0

[khiav223577]

unknown type name ‘my_bool’; did you mean ‘_Bool’?

If you encounter this:
Upgrade mysql2 gem to ~> 0.4.10
See: brianmario/mysql2#980

Error messages:

Fetching mysql2 0.3.21
Installing mysql2 0.3.21 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

...

compiling client.c
client.c: In function ‘nogvl_read_query_result’:
client.c:439:3: error: unknown type name ‘my_bool’; did you mean ‘_Bool’?
  439 |   my_bool res = mysql_read_query_result(client);
      |   ^~~~~~~
      |   _Bool
client.c: In function ‘rb_query’:

undefined symbol: rb_tainted_str_new2

If you encounter this:
Upgrade pg gem to ~> 1.2
See: ged/ruby-pg#307

Error messages:

/opt/hostedtoolcache/Ruby/3.2.2/x64/bin/ruby: symbol lookup error: /home/runner/work/atomically/atomically/vendor/bundle/ruby/3.2.0/gems/pg-1.1.4/lib/pg_ext.so: undefined symbol: rb_tainted_str_new2

‘rb_cData’ undeclared

If you encounter this:
Upgrade pg gem to ~> 1.4.6
See: ged/ruby-pg#496

Error messages:

pg_result.c:1590:65: error: ‘rb_cData’ undeclared (first use in this function)
1590 |         rb_cPGresult = rb_define_class_under( rb_mPG, "Result", rb_cData
);
      |                                                                 ^~~~~~~~
pg_result.c:1590:65: note: each undeclared identifier is reported only once for
each function it appears in
pg_result.c: At top level:
cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been
intended to silence earlier diagnostics
cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have
been intended to silence earlier diagnostics
cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may
have been intended to silence earlier diagnostics
make: *** [Makefile:248: pg_result.o] Error 1

make failed, exit code 2