terraform.mkProvider: include rev in src

This invalidates fixed-input derivation after bumping a version.

pkgs/applications/networking/cluster/terraform-providers/default.nix

@@ -32,6 +32,7 @@ let
         CGO_ENABLED = 0;
         ldflags = [ "-s" "-w" "-X main.version=${version}" "-X main.commit=${rev}" ];
         src = fetchFromGitHub {
+          name = "source-${rev}";
           inherit owner repo rev sha256;
         };