feat(deps): update dependencies and adjust config for new Docusaurus version

Upgraded npm dependencies across the project, including major updates to `@fortawesome` and `@algolia` packages. Adjusted Docusaurus configuration to update markdown link paths and enable legacy-head attribute removal for v4. These changes improve compatibility and prepare the project for future updates.

Author: DrackThor

cna/data/mdxFrontMatter.json

@@ -1,36 +1 @@
-[
-  {
-    "chapter": "graz",
-    "file": "/Users/drackthor/code/repos/drackthor/cna-website/cna/src/pages/graz/20250417.mdx",
-    "frontMatter": {
-      "date": "2025-04-17",
-      "id": 20250417,
-      "location": "SPACELEND",
-      "locationAddress": "Neubaugasse 24, 8020 Graz",
-      "locationGmapsUrl": "https://maps.app.goo.gl/SPysNWReHUbrEQBT6",
-      "locationOpenStreetUrl": "https://www.openstreetmap.org/node/8752516740",
-      "timeEnd": "10pm",
-      "timeStart": "5pm",
-      "title": "Meetup Graz April",
-      "urlBevy": "https://community.cncf.io/events/details/cncf-cloud-native-graz-presents-cncg-graz-meetup-april-2025/",
-      "urlMeetup": "https://www.meetup.com/cncf-graz/events/306151086/"
-    }
-  },
-  {
-    "chapter": "graz",
-    "file": "/Users/drackthor/code/repos/drackthor/cna-website/cna/src/pages/graz/20250522.mdx",
-    "frontMatter": {
-      "date": "2025-05-22",
-      "id": 20250522,
-      "location": "SPACELEND",
-      "locationAddress": "Neubaugasse 24, 8020 Graz",
-      "locationGmapsUrl": "https://maps.app.goo.gl/SPysNWReHUbrEQBT6",
-      "locationOpenStreetUrl": "https://www.openstreetmap.org/node/8752516740",
-      "timeEnd": "10pm",
-      "timeStart": "5pm",
-      "title": "Meetup Graz May",
-      "urlBevy": "",
-      "urlMeetup": ""
-    }
-  }
-]
+[]

cna/docusaurus.config.js

@@ -28,6 +28,9 @@ const config = {
   onBrokenMarkdownLinks: 'throw',
 
   future: {
+    v4: {
+      removeLegacyPostBuildHeadAttribute: true,
+    },
     experimental_faster: true,
   },
 
@@ -207,7 +210,7 @@ const config = {
             items: [
               {
                 label: 'Impressum',
-                to: '/data-privacy',
+                to: '/imprint',
               },
               // {
               //   label: 'Blog',