Bump FluentAssertions from 7.2.0 to 8.6.0

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-version: 8.6.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-versions.props

@@ -8,7 +8,7 @@
     <BogusVersion>35.6.*</BogusVersion>
     <CoverletVersion>6.0.*</CoverletVersion>
     <EphemeralMongoVersion>3.1.*</EphemeralMongoVersion>
-    <FluentAssertionsVersion>7.2.*</FluentAssertionsVersion>
+    <FluentAssertionsVersion>8.6.0</FluentAssertionsVersion>
     <GitHubActionsTestLoggerVersion>2.4.*</GitHubActionsTestLoggerVersion>
     <InheritDocVersion>2.0.*</InheritDocVersion>
     <MongoDBDriverVersion>3.3.*</MongoDBDriverVersion>