Bump dio from 5.3.3 to 5.4.0 in /example

[dependabot[bot]]

Bumps dio from 5.3.3 to 5.4.0.

Release notes

Sourced from dio's releases.

dio 5.4.0

What's new

• Improve SyncTransformer's stream transform.
• Allow case-sensitive header keys with the preserveHeaderCase flag through options.
• Fix receiveTimeout for the IOHttpClientAdapter.
• Fix receiveTimeout for the download method of DioForNative.
• Improve the stream byte conversion.

dio 5.3.4

What's new

• Raise warning for Maps other than Map<String, dynamic> when encoding request data.
• Improve exception messages.
• Allow ResponseDecoder and RequestEncoder to be async.
• Ignores Duration.zero timeouts.

Commits

• 65f6022 🔖 dio v5.4.0
• f4606cf Improve default parameter naming for Interceptor (#2047)
• 1e370ab Http2 adatper header support dynamic (#2043)
• a7a7878 ⚡️ Check Uint8List before doing byte conversions (#2045)
• d589d08 🐛 Fix receiveTimeout (#2036)
• d3ceab2 [http2_adapter] ✨ Support non-TLS connection requests (#2044)
• 4d61f65 Case-sensitive headers (#2008)
• bb6d65b [native_dio_adapter] ✨ Adds createCronetEngine and `createCupertinoConfigur...
• b191797 🔧 Handle all examples with melos (#2041)
• 6e83a11 ⚡️ Remove the redundant stream transform (#2037)
• Additional commits viewable in compare view

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