Bump serde_json from 1.0.68 to 1.0.73

[dependabot[bot]]

Bumps serde_json from 1.0.68 to 1.0.73.

Release notes

Sourced from serde_json's releases.

v1.0.73

• Update itoa dependency to 1.0

v1.0.72

• Interpret \u-encoded lone surrogates when deserializing into a byte string (#828, #829, thanks @​lucacasonato)

v1.0.71

• Add serde_json::Map::get_key_value (#821, thanks @​timothee-haudebourg)
• Add impl From<Box<RawValue>> for Box<str> (#824, thanks @​jplatte)

v1.0.70

• Add serde_json::Map::retain method (#822, thanks @​deankarn)

v1.0.69

• Implement Hash for serde_json::Number (#814, thanks @​timothee-haudebourg)

Commits

• 296f718 Release 1.0.73
• 48455de Update to itoa 1.0
• b66b0eb Track raw pointers in miri CI run
• 52eec5e Add a miri test job in CI
• aaaf125 Disable TcpStream test on miri
• f0774c4 Raise required rustc from 1.31 to 1.36
• c3eddcd Collect imports to top of test suite
• a28529d Skip ui test when running in miri
• 7db1ea9 Ignore needless_late_init Clippy lint
• fc0ca07 Merge pull request #831 from serde-rs/from_u32
• Additional commits viewable in compare view

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