Build(deps): bump github.com/posthog/posthog-go from 1.6.3 to 1.6.4

Bumps [github.com/posthog/posthog-go](https://github.com/posthog/posthog-go) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/posthog/posthog-go/releases)
- [Changelog](https://github.com/PostHog/posthog-go/blob/master/CHANGELOG.md)
- [Commits](https://github.com/posthog/posthog-go/compare/v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: github.com/posthog/posthog-go
  dependency-version: 1.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -32,7 +32,7 @@ require (
 require (
 	filippo.io/edwards25519 v1.1.0
 	github.com/c-robinson/iplib v1.0.8
-	github.com/posthog/posthog-go v1.6.3
+	github.com/posthog/posthog-go v1.6.4
 )
 
 require (

go.sum

@@ -140,8 +140,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/posthog/posthog-go v1.6.3 h1:cXkvbxXmfhyKWufuEbSYpKQw/TG0+ns4HCu+Yi5rw24=
-github.com/posthog/posthog-go v1.6.3/go.mod h1:2aijxPrXW9fsp+ItWx1iLM5lkoLLGzefrzGzjKYKPL4=
+github.com/posthog/posthog-go v1.6.4 h1:vPo6Z8T1R+aUBugXg1+psD8qZYSOtFktzhj6H8rzOBI=
+github.com/posthog/posthog-go v1.6.4/go.mod h1:LcC1Nu4AgvV22EndTtrMXTy+7RGVC0MhChSw7Qk5XkY=
 github.com/pquerna/otp v1.5.0 h1:NMMR+WrmaqXU4EzdGJEE1aUUI0AMRzsp96fFFWNPwxs=
 github.com/pquerna/otp v1.5.0/go.mod h1:dkJfzwRKNiegxyNb54X/3fLwhCynbMspSyWKnvi1AEg=
 github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4g=