ISTWCMS-7244: slightly increase timeline date widths so 4-digit year always fits on one line

src/patterns/04-components/timeline/_timeline.scss

@@ -61,7 +61,7 @@
     position: relative;
     text-align: center;
     /* Fix the width so the line always lines up. */
-    width: var(--size-6);
+    width: var(--size-605);
     z-index: var(--layer-wrapper);
   }
 
@@ -78,7 +78,7 @@
     text-align: center;
     text-transform: uppercase;
     /* Fix the width so the line always lines up. */
-    width: var(--size-6);
+    width: var(--size-605);
     z-index: var(--layer-wrapper);
   }