Upgrade elixir_make to 0.9.0

[contested-space]

Problem:

Since GenMagic uses Elixir Make 0.7.7, it isn't compatible with modern Phoenix applications.

Solution:

Upgrade Elixir Make to 0.9.0.

[joaothallis]

Is it a typo?

Suggested change

	erlang erlang 27.0.1
	erlang 27.0.1

[contested-space]

Good catch! Looks like I mistakenly ran asdf set erlang erlang 27.0.1 which either just didn't work and asdf defaulted to my global Erlang version, or was somehow luckily still correctly parsed. Fixed.

[joaothallis]

Thank you!

[contested-space]

Thanks for the approval!

Note: I (rightfully) don't have the permissions to merge and tag so I'll leave that to you.

[joaothallis]

@evadne do you know why the Travis CI wasn't triggered?

[joaothallis]

Is it necessary to update the Elixir and Erlang to upgrade the library? If yes, could you please update all other places using this old Elixir/Erlang version in the project?

[contested-space]

Good question. I'll make some tests to figure the minimal versions out and I'll update this.

[contested-space]

All right! I looked it up and turns out Elixir Make works for Elixir 1.9 and up. It wasn't working for me because older versions of OTP require some SSL-related shenanigans. I removed the changes to .tool-versions, since they are not needed for this change.

I would recommend completely removing this file and instead relying on mix.exs to enforce the Elixir and OTP versions instead, but this is out of the scope of this PR.

[contested-space]

Update: I also slightly change the mix.exs to stop this warning:

Run mix compile --warnings-as-errors
    warning: using single-quoted strings to represent charlists is deprecated.
    Use ~c"" if you indeed want a charlist or use "" instead.
    You may run "mix format --migrate" to change all single-quoted
    strings to use the ~c sigil and fix this warning.
    │
  4 │   if :erlang.system_info(:otp_release) < '21' do
    │                                          ~
    │
    └─ /home/runner/work/console/console/deps/gen_magic/mix.exs:4:42
    ```