update design system version and modal close button (#3148)

* update design system version and modal close button

* change package-lock.json version from v3 to v1

Author: xulingzhihou

components/modal/index.jsx

@@ -431,7 +431,6 @@ class Modal extends React.Component {
 				iconCategory="utility"
 				iconName="close"
 				iconSize="large"
-				inverse
 				className="slds-button_icon slds-modal__close"
 				onClick={this.closeModal}
 				title={closeButtonAssistiveText}

package-lock.json

@@ -112,7 +112,7 @@
 		"warning": "^4.0.3"
 	},
 	"peerDependencies": {
-		"@salesforce-ux/design-system": "2.21.5-wcag",
+		"@salesforce-ux/design-system": "2.25.0-alpha.2",
 		"react": ">=16.8",
 		"react-dom": ">=16.8"
 	},
@@ -130,7 +130,7 @@
 		"@babel/polyfill": "^7.12.1",
 		"@babel/preset-env": "^7.14.2",
 		"@babel/preset-react": "^7.12.7",
-		"@salesforce-ux/design-system": "2.21.5-wcag",
+		"@salesforce-ux/design-system": "2.25.0-alpha.2",
 		"@salesforce-ux/icons": "10.x",
 		"@salesforce/eslint-plugin-slds-react": "^0.0.1",
 		"@storybook/addon-a11y": "^6.2.0",