Update gpx requirement from 0.8 to 0.9

[dependabot[bot]]

Updates the requirements on gpx to permit the latest version.

Changelog

Sourced from gpx's changelog.

0.9.0

• #87: Rename Route::_type, Track::_type, Waypoint::_type, Link::_type to type_

• #86: Bump MSRV to 1.65

• #84: Allow nested <extension> tags

• #78: Replace RFC 3339 by ISO 8601 for de-/encoding time stamps, fix error handling bug on track parsing, apply Clippy suggestion

0.8.6

• #65: Replace chrono to time crate
• #66: Allow extensions tags inside of route
• #68: Bump CI minimum rust version to 1.53, max to 1.59
• #67: Add xmlns attribute in written gpx for better garmin compatibility
• #73: Bump CI minimum rust version to 1.56, max to 1.59
• #74: Address deprecation warnings from geo-types
• #71: Allow empty waypoint names
• #72: Allow empty elevation tags

0.8.5

• #61: Allow custom xml::EventWriter in write(add write_with_event_writer)
• #62: Implementing serde (De)Serialize for GPX structs
• #42: Track extensions

0.8.4

• #57: Support Number on Tracks

0.8.3

• #55: Allow name tags inside of trks to be empty

0.8.2

• #49: Use correct XML tag "desc" instead of "description"
• #48: Support parsing copyright tag in metadata

0.8.1

• allow empty fields: "desc", "cmt", "description", "keywords", "src"
• Add support for route tag

0.8.0

• #24: Parse link elements inside trk tags, extensions inside metadata

... (truncated)

Commits

• 9b3a25a Merge #88
• f75a4f7 Drop authors entry from manifest
• 314f448 Merge #84
• 5401dc7 Merge #87
• abb25a6 Update changelog
• c315716 Rename Route::_type, Track::_type, Waypoint::_type, Link::type to type
• ed66342 Fix typo in error message
• 374ffb3 Fix some clippy lints
• 280c8ca Merge #85
• bbc6b37 Bump geo
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like gpx is up-to-date now, so this is no longer needed.