Firefox 149 ships font-family: math (#29250)

FF149 font-family: math supported

Author: hamishwillee

css/properties/font-family.json

@@ -243,7 +243,7 @@
               "chrome_android": "mirror",
               "edge": "mirror",
               "firefox": {
-                "version_added": "145"
+                "version_added": "149"
               },
               "firefox_android": "mirror",
               "oculus": "mirror",