Update a few Firefox needles again

Seems the latest Firefox builds in F30 and F31 updates render
fonts a little differently again, not sure why this is.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/browser/kernelorg_patch-20191204.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "type": "match",
+      "ypos": 652,
+      "width": 55,
+      "xpos": 508,
+      "height": 17
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "browser_kernelorg_patch"
+  ]
+}

needles/cockpit/logs_entry_detail-20191204.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "type": "match",
+      "ypos": 384,
+      "width": 163,
+      "xpos": 476,
+      "height": 14
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "cockpit_logs_detail"
+  ]
+}

needles/cockpit/logs_severity-20191204.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "type": "match",
+      "height": 16,
+      "xpos": 556,
+      "width": 62,
+      "ypos": 160
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "cockpit_logs_severity"
+  ]
+}