fix: incorrect data URL parsing

[kiwiyou]

Fixes #597 with correct regex.

Data URL Specification

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Name	Status	Preview	Comments	Updated (UTC)
satori-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 11, 2024 9:30pm

[steven-tey]

Just tested this out, doesn't seem to work: playground link

[kiwiyou]

@steven-tey Thank you for your report. I found out that this PR fixes an another issue. Updated issue number.

[shuding]

Thanks @kiwiyou! Could you please add a test case for it so it won't regress in the future?

[kiwiyou]

@shuding Added 2 tests. I deliberately excluded tests for unsupported charsets. (e.g. charset=iso-8859-7)

[steven-tey]

Edit: NVM, just saw your comment here #592 (comment)

Really appreciate your work on this @kiwiyou, but from the latest preview URL, this doesn't seem to work:

(PNG tab)

[kiwiyou]

@shuding Could you review this PR?

[ducan-ne]

it still doesn't seem to work in my case too, Playground url

[kiwiyou]

@ducan-ne It works on my machine, could you describe the step to reproduce the bug?

[ducan-ne]

@kiwiyou I don't know it just shows me a error when use the playground