fix(stepper): fast follows for focus/focus+hover/keyboardFocus borders (#3621)

* fix(stepper): focus/focus+hover/keyboardFocus border colors

* chore(stepper): add changeset

Author: marissahuysentruyt

.changeset/sharp-spiders-complain.md

@@ -0,0 +1,6 @@
+---
+"@spectrum-css/stepper": patch
+---
+
+- Updates `--spectrum-stepper-border-color-focus-hover` from `gray-800` to `gray-900`.
+- Updates `--spectrum-stepper-buttons-border-color-keyboard-focus` from `gray-900` to `gray-800` to match the rest of the border color on keyboardFocus.

components/stepper/themes/spectrum-two.css

@@ -17,7 +17,7 @@
 		--spectrum-stepper-border-color-default: var(--spectrum-gray-500);
 		--spectrum-stepper-border-color-hover: var(--spectrum-gray-600);
 		--spectrum-stepper-border-color-focus: var(--spectrum-gray-800);
-		--spectrum-stepper-border-color-focus-hover: var(--spectrum-gray-800);
+		--spectrum-stepper-border-color-focus-hover: var(--spectrum-gray-900);
 		--spectrum-stepper-border-color-keyboard-focus: var(--spectrum-gray-800);
 
 		--spectrum-stepper-buttons-border-style: none;
@@ -26,7 +26,7 @@
 		--spectrum-stepper-buttons-background-color: var(--spectrum-gray-100);
 		--spectrum-stepper-buttons-border-color-hover: var(--spectrum-gray-600);
 		--spectrum-stepper-buttons-border-color-focus: var(--spectrum-gray-800);
-		--spectrum-stepper-buttons-border-color-keyboard-focus: var(--spectrum-gray-900);
+		--spectrum-stepper-buttons-border-color-keyboard-focus: var(--spectrum-gray-800);
 
 		--spectrum-stepper-button-border-width: var(--spectrum-border-width-100);