Bump Serilog.Sinks.ApplicationInsights from 3.1.0 to 4.0.0
Bump Serilog.Sinks.ApplicationInsights from 3.1.0 to 4.0.0

Bumps [Serilog.Sinks.ApplicationInsights](https://github.com/serilog-contrib/serilog-sinks-applicationinsights) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/serilog-contrib/serilog-sinks-applicationinsights/releases)
- [Commits](https://github.com/serilog-contrib/serilog-sinks-applicationinsights/compare/v3.1.0...v4.0.0)

---
updated-dependencies:
- dependency-name: Serilog.Sinks.ApplicationInsights
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site,martincostello/alexa-london-travel-site