fix(deps): update dependency codemirror to v5.51.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codemirror (source)	dependencies	minor	5.49.0 -> 5.51.0

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Release Notes

codemirror/CodeMirror

v5.51.0

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Bug fixes

Fix the behavior of the home and end keys when direction is set to "rtl".

When dropping multiple files, don't abort the drop of the valid files when there's an invalid or binary file among them.

Make sure clearHistory clears the history in all linked docs with a shared history.

vim bindings: Fix behavior of ' and ` marks, fix R in visual mode.

New features

vim bindings: Support gi, gI, and gJ.

v5.50.2

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Bug fixes

Fix bug that broke removal of line widgets.

v5.50.0

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Bug fixes

Make Shift-Delete to cut work on Firefox.

closetag addon: Properly handle self-closing tags.

handlebars mode: Fix triple-brace support.

searchcursor addon: Support mathing $ in reverse regexp search.

panel addon: Don't get confused by changing panel sizes.

javascript-hint addon: Complete variables defined in outer scopes.

sublime bindings: Make by-subword motion more consistent with Sublime Text.

julia mode: Don't break on zero-prefixed integers.

elm mode: Sync with upstream version.

sql mode: Support Postgres-style backslash-escaped string literals.

New features

Add a className option to addLineWidget.

foldcode addon: Allow fold widgets to be functions, to dynamically create fold markers.

New themes: ayu-dark and ayu-mirage.

v5.49.2

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Bug fixes

sublime bindings: Make selectNextOccurrence stop doing something when all occurrences are selected.

continuecomment addon: Respect indentWithTabs option.

foldgutter addon: Optimize by reusing DOM when possible.

markdown mode: Don't reset inline styles at the start of a continued list item line.

clike mode: Add a configuration for Objective-C++.

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