Highlighting issue when encountering \{ in a string

[dusty-phillips]

simple repro:

let foo = "abc\{"
let bar

inko.vim highlights the second line as if it's still a member of the string.

I suspect it thinks that the opening { is changing to template literal mode and is ignoring the \ escape.

[yorickpeterse]

Seems I missed this due to some GitHub notifications SNAFU. Either way, Vim syntax highlighting is a bit of a mystery/gamble. The embed rule is as follows:

syn region inkoStringEmbed matchgroup=inkoStringEmbedDelimiter
    \ start="{" end="}" skip="\\\\\|\\{" contains=TOP contained

My guess is the skip attribute isn't right here, though I'm not sure what it should be instead.