fix(deps): update module github.com/open-feature/flagd/core to v0.9.3

Author: renovate[bot]

flagd-proxy/go.mod

@@ -9,7 +9,7 @@ require (
 	buf.build/gen/go/open-feature/flagd/protocolbuffers/go v1.34.1-20240215170432-1e611e2999cc.1
 	github.com/dimiro1/banner v1.1.0
 	github.com/mattn/go-colorable v0.1.13
-	github.com/open-feature/flagd/core v0.9.0
+	github.com/open-feature/flagd/core v0.9.3
 	github.com/prometheus/client_golang v1.19.1
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/viper v1.18.2