fix(deps): update dependency flutter_markdown to ^0.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
flutter_markdown (source)	dependencies	minor	^0.6.20+1 -> ^0.7.0

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

flutter/packages (flutter_markdown)

v0.7.4+1

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• Makes it so that custom blocks are not limited to being a Column or
  SizedBox.

v0.7.4

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• Makes it so that custom blocks are not limited to being a Column or
  SizedBox.

v0.7.3+2

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• Resolves an issue where code blocks in markdown were not highlighted during selection.

v0.7.3+1

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• Fixes issue with table column alignments not being respected.
• Updates minimum supported SDK version to Flutter 3.19/Dart 3.3.

v0.7.3

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• Resolves an issue where code blocks in markdown were not highlighted during selection.

v0.7.2+1

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• Fixes a crash caused by text selection when selectable is true and onSelectionChanged is null.

v0.7.2

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• Fixes a crash caused by text selection when selectable is true and onSelectionChanged is null.

v0.7.1

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• Allows for choosing a custom font feature to create superscript in footnotes when the font does not support the supr font feature.
  • Use the superscriptFontFeatureTag property in MarkdownStyleSheet.
  • For example, for the Roboto font which doesn't support supr, you can set numr.

v0.7.0

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• BREAKING CHANGES:
  • Replaces parameters at bulletBuilder with MarkdownBulletParameters.
  • Introduces a new parameter nestLevel that exposes the bullet item's nesting level.

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: pubspec.lock

Command failed: flutter pub upgrade flutter_markdown
Because rtu_mirea_app depends on sort_box from path which doesn't exist (could not find package sort_box at "packages/neon/packages/sort_box"), version solving failed.