build: bump flagsmith-go-client to v5.2.0

The eval reason/variant work was developed against an unreleased commit,
so go.mod pinned a pseudo-version. v5.2.0 is out; pin the release.

beep boop

Author: khvn26

go.mod

@@ -3,7 +3,7 @@ module github.com/Flagsmith/flagsmith-cli/v2
 go 1.26
 
 require (
-	github.com/Flagsmith/flagsmith-go-client/v5 v5.1.1-0.20260807113230-bc111cdba75a
+	github.com/Flagsmith/flagsmith-go-client/v5 v5.2.0
 	github.com/blang/semver/v4 v4.0.0
 	github.com/charmbracelet/huh v1.0.0
 	github.com/fatih/color v1.19.0

go.sum

@@ -1,5 +1,5 @@
-github.com/Flagsmith/flagsmith-go-client/v5 v5.1.1-0.20260807113230-bc111cdba75a h1:u/v/5yCC+SaFeEip8lVMRS3w9yZrlNrrOLW/qmAGAqU=
-github.com/Flagsmith/flagsmith-go-client/v5 v5.1.1-0.20260807113230-bc111cdba75a/go.mod h1:CjTs0XAIJXG+08lf4h51W9cjvrNaK92TLVYtjPrnI3w=
+github.com/Flagsmith/flagsmith-go-client/v5 v5.2.0 h1:Mqs3nEceWQixRcnIdqnju1Kqo5HvTlhcR9HTdiOsjc4=
+github.com/Flagsmith/flagsmith-go-client/v5 v5.2.0/go.mod h1:CjTs0XAIJXG+08lf4h51W9cjvrNaK92TLVYtjPrnI3w=
 github.com/MakeNowJust/heredoc v1.0.0 h1:cXCdzVdstXyiTqTvfqk9SDHpKNjxuom+DOlyEeQ4pzQ=
 github.com/MakeNowJust/heredoc v1.0.0/go.mod h1:mG5amYoWBHf8vpLOuehzbGGw0EHxpZZ6lCpQ4fNJ8LE=
 github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=