make more regexes unicode aware #400

Job	Run time
mix test windows (Elixir 1.13.x \| Erlang/OTP 22.x)	1m 40s
static analysis (Elixir 1.15.x \| Erlang/OTP 26.x)	1m 6s
mix test windows (Elixir 1.13.x \| Erlang/OTP 23.x)	2m 6s
mix test (Elixir 1.13.x \| Erlang/OTP 22.x)	53s
mix test windows (Elixir 1.13.x \| Erlang/OTP 24.x)	2m 11s
mix test (Elixir 1.13.x \| Erlang/OTP 23.x)	1m 11s
mix test windows (Elixir 1.13.x \| Erlang/OTP 25.x)	2m 21s
mix test (Elixir 1.13.x \| Erlang/OTP 24.x)	55s
mix test windows (Elixir 1.14.x \| Erlang/OTP 23.x)	2m 34s
mix test (Elixir 1.13.x \| Erlang/OTP 25.x)	1m 3s
mix test windows (Elixir 1.14.x \| Erlang/OTP 24.x)	1m 54s
mix test (Elixir 1.14.x \| Erlang/OTP 23.x)	1m 18s
mix test windows (Elixir 1.14.x \| Erlang/OTP 25.x)	2m 1s
mix test (Elixir 1.14.x \| Erlang/OTP 24.x)	58s
mix test windows (Elixir 1.14.x \| Erlang/OTP 26.x)	2m 7s
mix test (Elixir 1.14.x \| Erlang/OTP 25.x)	52s
mix test windows (Elixir 1.15.x \| Erlang/OTP 24.x)	1m 52s
mix test (Elixir 1.14.x \| Erlang/OTP 26.x)	52s
mix test windows (Elixir 1.15.x \| Erlang/OTP 25.x)	2m 7s
mix test (Elixir 1.15.x \| Erlang/OTP 24.x)	51s
mix test windows (Elixir 1.15.x \| Erlang/OTP 26.x)	1m 36s
mix test (Elixir 1.15.x \| Erlang/OTP 25.x)	1m 5s
mix test (Elixir 1.15.x \| Erlang/OTP 26.x)	48s
	34m 21s

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