ISTWCMS-5657: adding neutral to the colors array and correcting font size of small text in CTA

src/patterns/01-core/props/_colors.scss

@@ -232,7 +232,8 @@ $faculties_colours: (
   'org-stp': stp,
   'org-cgc': cgc,
   'org-stj': stj,
-  'org-ren': ren
+  'org-ren': ren,
+  'neutral': neutral
 );
 
 //Swatches

src/patterns/04-components/call-to-action/_call-to-action.scss

@@ -165,7 +165,7 @@
   &--small {
     color: var(--uw-white);
     font-family: var(--font-systemmedium);
-    font-size: var(--font-size-2);
+    font-size: var(--font-size-000);
     line-height: 1;
     padding: 0 var(--size-05) var(--size-05) var(--size-05);
     text-transform: uppercase;