Bump github.com/ReneKroon/ttlcache/v2 from 2.7.0 to 2.8.0 (#1298)

Bumps [github.com/ReneKroon/ttlcache/v2](https://github.com/ReneKroon/ttlcache) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/ReneKroon/ttlcache/releases)
- [Changelog](https://github.com/ReneKroon/ttlcache/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ReneKroon/ttlcache/compare/v2.7.0...v2.8.0)

---
updated-dependencies:
- dependency-name: github.com/ReneKroon/ttlcache/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	code.cloudfoundry.org/go-diodes v0.0.0-20190809170250-f77fb823c7ee
 	github.com/ClickHouse/clickhouse-go v1.4.5 // indirect
 	github.com/Masterminds/squirrel v1.5.0
-	github.com/ReneKroon/ttlcache/v2 v2.7.0
+	github.com/ReneKroon/ttlcache/v2 v2.8.0
 	github.com/astaxie/beego v1.12.3
 	github.com/bradleyjkemp/cupaloy v2.3.0+incompatible
 	github.com/cespare/reflex v0.3.0