Update color-backtrace requirement from 0.4.2 to 0.5.1

[dependabot-preview]

Updates the requirements on color-backtrace to permit the latest version.

Changelog

Sourced from color-backtrace's changelog.

[v0.5.1] (2021-04-25)

• Add the ability to print module_name:offset, or address of frame
  • Contributed by [@​s1341], thanks!

[v0.5.0] (2020-11-21)

• Add __rust_begin_short_backtrace filter
• Remove experimental failure support

[v0.4.2] (2020-05-19)

Added

• Clone and Debug impls for BacktracePrinter
• COLORBT_SHOW_HIDDEN env variable, disabling frame filtering

[v0.4.1] (2020-05-08)

Fixed

• Use correct verbosity level for string formatting
• Fix off-by-one in frame hiding code
  • Hides one additional post-panic frame
• Slightly improved doc

[v0.4.0] (2020-05-06)

Added

• BacktracePrinter::format_trace_to_string
• Ability to add custom frame filter callbacks
  • BacktracePrinter::add_frame_filter
  • BacktracePrinter::clear_frame_filters
  • default_frame_filter
  • Thanks to [@​yaahc] for helping out with this!
• Prefer RUST_LIB_BACKTRACE env var when determining the default verbosity to print non-panic backtraces
  • Also contributed by [@​yaahc]

Changed

• Rename Settings → BacktracePrinter
• Move print_backtrace → BacktracePrinter::print_trace
• Move print_panic_info → BacktracePrinter::print_panic_info
• Move color_backtrace::failure::print_backtrace → BacktracePrinter::print_failure_trace
• The majority of old APIs have deprecated shims that forward calls to their new place to ease porting
• The out setting is no longer part of the BacktracePrinter and instead supplied as an argument to all functions that need it
  • The previous design forced Sync + Send + 'static constraints on any output stream since they are required when registering

... (truncated)

Commits

• f8dbec3 Update CHANGELOG, bump version
• d25c611 Add the ability to print module_name:offset, or address of frame (#44)
• dc53c08 Bump version to v0.5
• a7240e7 Remove experimental failure support
• c68832a Add badge for Apache license
• 390e22b Add __rust_begin_short_backtrace filter
• See full diff in compare view

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