Restore GHC 8.10.7 and 9.2.8 in tested-with

These GHC versions are no longer available in our nixpkgs channel,
but CI (haskell-ci) still verifies they build. Added a comment in
flake.nix explaining the discrepancy.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: michaelwebb76

flake.nix

@@ -9,6 +9,9 @@
     inputs:
     inputs.bellroy-nix-foss.lib.haskellProject {
       src = ./.;
+      # GHC 8.10 and 9.2 are listed in tested-with in the cabal file
+      # but are no longer available in our nixpkgs channel. CI
+      # (haskell-ci) verifies these older versions still build.
       supportedCompilers = [
         "ghc94"
         "ghc96"

timeline.cabal

@@ -16,7 +16,9 @@ maintainer:         Bellroy Tech Team <haskell@bellroy.com>
 category:           Development
 build-type:         Simple
 tested-with:
-  GHC ==9.4.8
+  GHC ==8.10.7
+   || ==9.2.8
+   || ==9.4.8
    || ==9.6.6
    || ==9.8.2
    || ==9.10.2