chore(deps): update dependency nlog.extensions.hosting to 5.3.15

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
NLog.Extensions.Hosting	5.3.14 -> 5.3.15

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Release Notes

NLog/NLog.Extensions.Logging (NLog.Extensions.Hosting)

v5.3.15

Improvements

• #​773: UseNLog allow fallback to only EnvironmentName for NLog config (#​773) (@​snakefoot)
• #​771: NLogMessageParameterList - Optimize the index operator (#​771) (@​snakefoot)
• #​770: NLogMessageParameterList - Simplify the index operator (#​770) (@​snakefoot)
• #​768: Recognize ITuple for better AOT support (#​768) (@​snakefoot)

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