Bump phoenix from 1.5.4 to 1.5.9 in /backend

[dependabot-preview[bot]]

Bumps phoenix from 1.5.4 to 1.5.9.

Changelog

Sourced from phoenix's changelog.

1.5.9 (2021-05-10)

JavaScript client

• Bind to beforeunload instead of unload to solve Firefox connection issues

1.5.8 (2021-02-23)

Enhancements

• [Endpoint] - Add :log_access_url config to endpoint start
• [Router] - Include route information in router_dispatch exception for telemetry events
• [Router] - Optimize router code generation to reduce compilation dependencies
• [phx.new] - Use topbar in new apps with the --live flag

JavaScript client

• Default channel push payload to empty object for backwards compatibility

1.5.7 (2020-11-20)

Enhancements

• [Channel] - Add binary serialization support to default serializers

JavaScript client

• Add binary serialization support to default serializers for ability to push ArrayBuffer objects as binary WebSocket frames

1.5.6 (2020-10-12)

Enhancements

• [phx.new] Add --install and --no-install options to phx.new

Bug fixes

• [phx.new] Update phoenix_live_dashboard requirement to fix version conflicts

1.5.5 (2020-09-21)

Enhancements

• [Phoenix.Logger] Add :conn to [:phoenix, :router_dispatch, :exception] events
• [Phoenix.Endpoint] Use regex to detect invalid hosts for IPv6 configurations
• [Phoenix.Controller] Don't create compile-time references when using action_fallback to speed up compilation
• [Phoenix.Endpoint] Expose :connect_info :trace_context_headers in websockets and long polling

Commits

• 5d4265e Release 1.5.9
• 235dbcd Bump changelog
• 196e11b Bind to beforeunload instead of unload to fix firefox issues
• 23c1013 Update CHANGELOG.md
• 7cf287c Add extension for live html engine
• fe7cba3 Allow more recent Phoenix.HTML versions
• 8d0d066 Do not list more dependencies than necessary in example
• 4e06644 Update CHANGELOG.md (#4233)
• 16ef6c5 Fix unexpected event errors in telemetry routing tests (#4229)
• 5c8fbd9 Bump floki dep and fix tests
• Additional commits viewable in compare view

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