Merge branch 'fix/nix/easy-format' into 'master'

Update Frama-CI data

See merge request frama-c/frama-c!3728

nix/default.nix

@@ -13,6 +13,7 @@ let mydir = builtins.getEnv("PWD");
         "coq=8.13.0" "alt-ergo=2.2.0"
         "why3=1.4.0" "why3-coq=1.4.0"
         "menhir=20211012"
+        "easy-format=1.3.2"
       ];
     # only pure nix packages. See mk_deriv below for adding opam2nix packages
     mk_buildInputs = { nixPackages ? [] } :

nix/frama-ci.nix

@@ -5,8 +5,8 @@ let
     src = builtins.fetchGit {
             "url" = "https://bobot:${password}@git.frama-c.com/frama-c/Frama-CI.git";
             "name" = "Frama-CI";
-            "rev" = "22ccb4e8951b6ac6eb62b0b0c6a53f9a98c94951";
-            "ref" = "master";
+            "rev" = "4dd9d4def36be28bba9751d652bd8849eeca505a";
+            "ref" = "fix/nix/easy-format";
     };
     pkgs = import "${src}/pkgs.nix" {};
  in