Update GNOME panel volume bar needles for a spacing change

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

needles/gnome/apps/gnome-panel/panel_volume_bar_hundred-20250418.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "ypos": 108,
+      "height": 25,
+      "type": "match",
+      "xpos": 639,
+      "width": 357
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "panel_volume_bar_hundred"
+  ]
+}

needles/gnome/apps/gnome-panel/panel_volume_bar_zero-20250417.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "ypos": 105,
+      "type": "match",
+      "height": 30,
+      "xpos": 639,
+      "width": 358
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "panel_volume_bar_zero"
+  ]
+}