Upgraded pub packages for Flutter v3.13.6

[nausharipov]

flutter pub outdated:
Showing outdated packages.
[*] indicates versions that are not the latest available.

Package Name  Current  Upgradable  Resolvable  Latest  

direct dependencies: all up-to-date.

dev_dependencies: all up-to-date.
all dependencies are up-to-date.

flutter test:
00:31 +271: All tests passed!

flutter doctor:
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.13.6, on macOS 14.0 23A344 darwin-x64, locale en-KZ)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.1)
[✓] VS Code (version 1.83.0)
[✓] Connected device (2 available)
[✓] Network resources

• No issues found!

example/lib/02.code_field % flutter run:

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (149888a) 82.61% compared to head (2bbd103) 82.60%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #256 +/- ## ========================================== - Coverage 82.61% 82.60% -0.02% ========================================== Files 107 107 Lines 3163 3161 -2 ========================================== - Hits 2613 2611 -2 Misses 550 550 ``` | [Files](https://app.codecov.io/gh/akvelon/flutter-code-editor/pull/256?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=akvelon) | Coverage Δ | | |---|---|---| | [lib/src/search/controller.dart](https://app.codecov.io/gh/akvelon/flutter-code-editor/pull/256?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=akvelon#diff-bGliL3NyYy9zZWFyY2gvY29udHJvbGxlci5kYXJ0) | `78.46% <100.00%> (-0.65%)` | :arrow_down: |

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