chore(deps): update dependency sphinx-rtd-theme to v3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Confidence
sphinx-rtd-theme	^0.4.0 -> ^3.0.0
sphinx-rtd-theme	==1.3.0 -> ==3.0.2

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Release Notes

readthedocs/sphinx_rtd_theme (sphinx-rtd-theme)

v3.0.2

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v3.0.1

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v3.0.0

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v2.0.0

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v1.3.0

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v1.2.2

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v1.2.1

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v1.2.0

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v1.1.1

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v1.1.0

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v1.0.0

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v0.5.2

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v0.5.1

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v0.5.0

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Configuration

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