update user agents

searx/data/useragents.json

@@ -1,16 +1,11 @@
 {
     "versions": [
-        "67.0.4",
-        "67.0.3",
-        "67.0.2",
-        "67.0.1",
-        "67.0",
-        "66.0.5",
-        "66.0.4",
-        "66.0.3",
-        "66.0.2",
-        "66.0.1",
-        "66.0"
+        "70.0.1",
+        "70.0",
+        "69.0.3",
+        "69.0.2",
+        "69.0.1",
+        "69.0"
     ],
     "os": [
         "Windows NT 10; WOW64",