Update icon color classes to use "text-secondary" instead of "text-dark"

src/bootstrap/PasswordInput.js

@@ -49,7 +49,7 @@ function PasswordInput({ withEye, newPass, ...props }) {
                     <FontAwesomeIcon
                         icon={isHidden ? faEye : faEyeSlash}
                         style={{ width: "1.25rem" }}
-                        className="text-dark"
+                        className="text-secondary"
                     />
                 </button>
             )}

src/common/WiFiSettings/WiFiQRCode.js

@@ -42,7 +42,7 @@ export default function WiFiQRCode({ SSID, password }) {
                     icon="fa-solid fa-qrcode"
                     title={_("Show QR code")}
                     aria-label={_("Show QR code")}
-                    className="text-dark"
+                    className="text-secondary"
                 />
             </button>
             {modal ? (