Use `Inst_eddies_12` instead of `Inst_eddies_5`

`Inst_eddies_12` uses the current revision and so does not contain
invalid eddies.

Overlap/Tests/long_tests.json

@@ -4,7 +4,7 @@
         "title": "EGg",
 	"env": {"mpiexec": "$mpiexec"},
         "command":
-	["$build_dir/Overlap/eddy_graph.sh", "1", "$PWD/Inst_eddies_5"]
+	["$build_dir/Overlap/eddy_graph.sh", "1", "$PWD/Inst_eddies_12"]
     },
     {
         "input": "&config_graph_nml max_delta = 4, cyclone = f/\n&MAIN_NML /\n",

Overlap/Tests/short_tests.json

@@ -109,7 +109,7 @@
         "command":
         [
           "$build_dir/Overlap/Tests/test_overlap",
-          "$PWD/Inst_eddies_5"
+          "$PWD/Inst_eddies_12"
         ]
     },
     {
@@ -152,7 +152,7 @@
         "command":
             [
                 "$build_dir/Overlap/Tests/test_overlap",
-                "$PWD/Inst_eddies_5"
+                "$PWD/Inst_eddies_12"
             ]
     },
     {