Update pangram test to remove non-ASCII characters, closes #53

[SleeplessByte]

I haven't checked but if this mimics a test from the canonical data (https://github.com/exercism/problem-specifications/blob/f375051787370bd1af1dd84e8d6c116f07d88ad2/exercises/pangram/canonical-data.json), then the tests.toml file should be updated to: https://github.com/exercism/purescript/blob/3d0913a2f4463adeb85c4c7847eb2e0f510c1038/exercises/practice/pangram/.meta/tests.toml.

Can you confirm it's either not necessary (because it doesn't exist in the canonical data) or update it, either manually, or by using configlet?

[icyrockcom]

@SleeplessByte This particular test is already there:

https://github.com/exercism/problem-specifications/blob/main/exercises/pangram/canonical-data.json#L90

https://github.com/exercism/purescript/blob/3d0913a2f4463adeb85c4c7847eb2e0f510c1038/exercises/practice/pangram/.meta/tests.toml#L39

[icyrockcom]

The descriptions do not match though and there's one more test in the problem set:

    test "sentence empty" do
    test "pangram with only lower case" do
    test "missing character 'x'" do
    test "another missing character 'x'" do
    test "pangram with underscores" do
    test "pangram with numbers" do
    test "missing letters replaced by numbers" do
    test "pangram with mixed case and punctuation" do
    test "upper and lower case versions of the same character should not be counted separately" do

vs

# - Recreate every `description` key/value pair
description = "empty sentence"
description = "perfect lower case"
description = "only lower case"
description = "missing the letter 'x'"
description = "missing the letter 'h'"
description = "with underscores"
description = "with numbers"
description = "missing letters replaced by numbers"
description = "mixed case and punctuation"
description = "case insensitive"

Do you want me to update that before you merge?

[SleeplessByte]

That would be grand if you could!

[icyrockcom]

@SleeplessByte Done, let me know how it looks.

[SleeplessByte]

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