Update dependency com.google.truth:truth to v1.4.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.truth:truth	1.4.3 -> 1.4.4

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Release Notes

google/truth (com.google.truth:truth)

v1.4.4

• Annotated the rest of the main package for nullness, and moved the @NullMarked annotation from individual classes up to the package to avoid a warning under --release 8. (e107aea)
• Improved the failure message for matches to conditionally suggest using containsMatch. (7e9fc7a)

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