ENH: set max_volumetric_speed to 70

jira:[NEW]

Signed-off-by: xun.zhang <xun.zhang@bambulab.com>
Change-Id: I6d2b366ac2c6adaa4b075a0f64b3c17d8f47781a

src/libslic3r/PrintConfig.cpp

@@ -1344,7 +1344,7 @@ void PrintConfigDef::init_fff_params()
                      "Can't be zero");
     def->sidetext = L("mm³/s");
     def->min = 0;
-    def->max = 50;
+    def->max = 70;
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloats { 2. });