chore(deps): bump github.com/pkoukk/tiktoken-go from 0.1.7 to 0.1.8

Bumps [github.com/pkoukk/tiktoken-go](https://github.com/pkoukk/tiktoken-go) from 0.1.7 to 0.1.8.
- [Release notes](https://github.com/pkoukk/tiktoken-go/releases)
- [Commits](pkoukk/tiktoken-go@v0.1.7...v0.1.8)

---
updated-dependencies:
- dependency-name: github.com/pkoukk/tiktoken-go
  dependency-version: 0.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

core/go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/mattn/go-isatty v0.0.20
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/pkg/errors v0.9.1
-	github.com/pkoukk/tiktoken-go v0.1.7
+	github.com/pkoukk/tiktoken-go v0.1.8
 	github.com/redis/go-redis/v9 v9.12.1
 	github.com/shopspring/decimal v1.4.0
 	github.com/sirupsen/logrus v1.9.3

core/go.sum

@@ -198,8 +198,8 @@ github.com/perimeterx/marshmallow v1.1.5/go.mod h1:dsXbUu8CRzfYP5a87xpp0xq9S3u0V
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkoukk/tiktoken-go v0.1.7 h1:qOBHXX4PHtvIvmOtyg1EeKlwFRiMKAcoMp4Q+bLQDmw=
-github.com/pkoukk/tiktoken-go v0.1.7/go.mod h1:9NiV+i9mJKGj1rYOT+njbv+ZwA/zJxYdewGl6qVatpg=
+github.com/pkoukk/tiktoken-go v0.1.8 h1:85ENo+3FpWgAACBaEUVp+lctuTcYUO7BtmfhlN/QTRo=
+github.com/pkoukk/tiktoken-go v0.1.8/go.mod h1:9NiV+i9mJKGj1rYOT+njbv+ZwA/zJxYdewGl6qVatpg=
 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/redis/go-redis/v9 v9.12.1 h1:k5iquqv27aBtnTm2tIkROUDp8JBXhXZIVu1InSgvovg=