Update graphviz to latest (11.0.0~dev)

This brings in an important bug fix so that the output of `-Txdot_json`
is deterministic.

nix/pkgs.nix

@@ -14,7 +14,16 @@ rec {
                 })
            else pkgs.haskell.compiler.ghc947;
   cabal_install_3_10_1_0 = pkgs.haskell.lib.compose.justStaticExecutables pkgs.haskell.packages.ghc947.cabal-install;
-  graphviz = pkgs.graphviz.overrideAttrs (finalAttrs: previousAttrs: {
+  graphviz_dev = pkgs.graphviz.overrideAttrs (finalAttrs: previousAttrs: {
+    version = "11.0.0~dev";
+    src = pkgs.fetchFromGitLab {
+      owner = "graphviz";
+      repo = "graphviz";
+      rev = "f3ec849249ef9cb824feb7f97449d7159e1dcb4e"; # head as of 2024-03-25, see gargantext#329
+      hash = "sha256-s86IqWz6zeKbcRqpV3cVQBVviHbhUSX1U8GVuJBfjC4=";
+    };
+  });
+  graphviz = graphviz_dev.overrideAttrs (finalAttrs: previousAttrs: {
                 # Increase the YY_BUF_SIZE, see https://gitlab.iscpif.fr/gargantext/haskell-gargantext/issues/290#note_9015
                 patches = [
                             (pkgs.fetchpatch {