Merge pull request #98524 from jonringer/cut-beta

nixos: now beta

nixos/release.nix

@@ -12,7 +12,7 @@ let
 
   version = fileContents ../.version;
   versionSuffix =
-    (if stableBranch then "." else "alpha") + "${toString (nixpkgs.revCount - 242760)}.${nixpkgs.shortRev}";
+    (if stableBranch then "." else "beta") + "${toString (nixpkgs.revCount - 242760)}.${nixpkgs.shortRev}";
 
   # Run the tests for each platform.  You can run a test by doing
   # e.g. ‘nix-build -A tests.login.x86_64-linux’, or equivalently,