[Bugfix] Error banner colour does not align with UI spec (#402)

azure-communication-ui/azure-communication-ui/src/calling/res/values/azure_communication_ui_calling_colors.xml

@@ -37,6 +37,6 @@
     <color name="azure_communication_ui_calling_color_floating_header">#99000000</color>
     <color name="azure_communication_ui_calling_color_button_switch_camera">#66000000</color>
     <color name="azure_communication_ui_calling_color_transparent_background">#000000</color>
-    <color name="azure_communication_ui_calling_color_snack_bar_background">#FFD335</color>
-    <color name="azure_communication_ui_calling_color_snack_bar_text_color">#212121</color>
+    <color name="azure_communication_ui_calling_color_snack_bar_background">#FFF8DF</color>
+    <color name="azure_communication_ui_calling_color_snack_bar_text_color">#8F761E</color>
 </resources>