Update to appkit 0.3.0 (#1171)

This is mostly done to fix peer-dependency issues regarding the Eslint
config. The colors, in particular danger in dark mode, have been
slightly changed, increasing contrast:

New:

![image](https://github.com/elan-ev/opencast-studio/assets/7419664/23ed7ed2-89e1-464f-93ca-d9089f0c4354)

Old:

![image](https://github.com/elan-ev/opencast-studio/assets/7419664/81553892-600f-428b-8230-7801b8dfa94d)

package.json

@@ -26,7 +26,7 @@
     "@fontsource-variable/roboto-flex": "^5.0.8",
     "@fontsource-variable/vazirmatn": "^5.0.20",
     "@iarna/toml": "^2.2.5",
-    "@opencast/appkit": "^0.2.4",
+    "@opencast/appkit": "^0.3.0",
     "@svgr/webpack": "^8.1.0",
     "babel-loader": "^9.1.3",
     "copy-webpack-plugin": "^12.0.2",

src/index.html

@@ -32,11 +32,13 @@
         --color-neutral70: #404040;
         --color-neutral80: #2a2a2a;
         --color-neutral90: #181818;
+
         --color-danger0: #feedeb;
         --color-danger1: #ffd2cd;
         --color-danger2: #feaba1;
         --color-danger4: #c22a2c;
         --color-danger5: #880e11;
+
         --color-accent9: #044a81;
         --color-accent8: #215D99;
         --color-accent7: #3073B8;
@@ -63,11 +65,13 @@
         --color-neutral70: #969696;
         --color-neutral80: #a6a6a6;
         --color-neutral90: #c4c4c4;
+
         --color-danger0: #361314;
         --color-danger1: #462522;
         --color-danger2: #712f2a;
-        --color-danger4: #dd554b;
-        --color-danger5: #f87965;
+        --color-danger4: #f2685b;
+        --color-danger5: #ff9581;
+
         --color-accent9: #85ace3;
         --color-accent8: #7da4db;
         --color-accent7: #588ccd;
@@ -100,6 +104,7 @@
         --color-danger4: #a50613;
         --color-danger5: #a50613;
 
+        --color-accent9: #000099;
         --color-accent8: #000099;
         --color-accent7: #000099;
         --color-accent6: #000099;
@@ -127,15 +132,16 @@
 
         --color-danger0: #000;
         --color-danger1: #000;
-        --color-danger2: #eb1722;
-        --color-danger4: #eb1722;
-        --color-danger5: #eb1722;
-
-        --color-accent8: #97c1ff;
-        --color-accent7: #97c1ff;
-        --color-accent6: #97c1ff;
-        --color-accent5: #97c1ff;
-        --color-accent4: #97c1ff;
+        --color-danger2: #ff9581;
+        --color-danger4: #ff9581;
+        --color-danger5: #ff9581;
+
+        --color-accent9: #a6ffea;
+        --color-accent8: #a6ffea;
+        --color-accent7: #a6ffea;
+        --color-accent6: #a6ffea;
+        --color-accent5: #a6ffea;
+        --color-accent4: #a6ffea;
 
         --color-focus: #97c1ff;
         color-scheme: dark;