Bump OpenTimelineIO from `7302ff1` to `4b3b673`

[dependabot[bot]]

Bumps OpenTimelineIO from 7302ff1 to 4b3b673.

Commits

• 4b3b673 added default_value fallback to serializable_field property (#1658)
• e8228a0 Resolve DeprecationWarning: Testing an element's truth value will raise an ex...
• 2c5735c constexpr updates (#1721)
• 8cf4a31 Bump OS X deployment version (#1719)
• f5237dd Bump src/deps/Imath from 5b8627a to b90cc01 (#1729)
• 4ec9ef1 Fix C++ examples for C++ 17 (#1723)
• b7cfbcf do not break the build if codecov fails (#1741)
• a5682c0 Pass the codecov token in CI to the uploader via the environment (#1737)
• c0e97b0 Add macos-14 arm64 runners (#1739)
• 9d875e7 Update codecov to run on python 3.10 builds (#1727)
• Additional commits viewable in compare view

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