Fix sass deprecation warnings

src/components/alphaPicker/style.scss

@@ -1,4 +1,4 @@
-@import '../../styles/mixins';
+@use '../../styles/mixins' as *;
 
 .alphaPicker {
     text-align: center;

src/components/multiSelect/multiSelect.scss

@@ -1,4 +1,4 @@
-@import '../../styles/mixins';
+@use '../../styles/mixins' as *;
 
 .itemSelectionPanel {
     position: absolute;

src/components/remotecontrol/remotecontrol.scss

@@ -1,4 +1,4 @@
-@import '../../styles/mixins';
+@use '../../styles/mixins' as *;
 
 .nowPlayingPage {
     padding: 5em 0 0 0 !important;

src/components/toast/toast.scss

@@ -1,4 +1,4 @@
-@import '../../styles/mixins';
+@use '../../styles/mixins' as *;
 
 .toastContainer {
     position: fixed;