Update browser releases (#27906)

Author: mdn-bot

browsers/firefox.json

@@ -1019,30 +1019,37 @@
         "142": {
           "release_date": "2025-08-19",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/142",
-          "status": "current",
+          "status": "retired",
           "engine": "Gecko",
           "engine_version": "142"
         },
         "143": {
           "release_date": "2025-09-16",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/143",
-          "status": "beta",
+          "status": "current",
           "engine": "Gecko",
           "engine_version": "143"
         },
         "144": {
           "release_date": "2025-10-14",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/144",
-          "status": "nightly",
+          "status": "beta",
           "engine": "Gecko",
           "engine_version": "144"
         },
         "145": {
           "release_date": "2025-11-11",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/145",
-          "status": "planned",
+          "status": "nightly",
           "engine": "Gecko",
           "engine_version": "145"
+        },
+        "146": {
+          "release_date": "2025-12-09",
+          "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/146",
+          "status": "planned",
+          "engine": "Gecko",
+          "engine_version": "146"
         }
       }
     }

browsers/firefox_android.json

@@ -886,30 +886,37 @@
         "142": {
           "release_date": "2025-08-19",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/142",
-          "status": "current",
+          "status": "retired",
           "engine": "Gecko",
           "engine_version": "142"
         },
         "143": {
           "release_date": "2025-09-16",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/143",
-          "status": "beta",
+          "status": "current",
           "engine": "Gecko",
           "engine_version": "143"
         },
         "144": {
           "release_date": "2025-10-14",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/144",
-          "status": "nightly",
+          "status": "beta",
           "engine": "Gecko",
           "engine_version": "144"
         },
         "145": {
           "release_date": "2025-11-11",
           "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/145",
-          "status": "planned",
+          "status": "nightly",
           "engine": "Gecko",
           "engine_version": "145"
+        },
+        "146": {
+          "release_date": "2025-12-09",
+          "release_notes": "https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/146",
+          "status": "planned",
+          "engine": "Gecko",
+          "engine_version": "146"
         }
       }
     }