Update dependency @11ty/eleventy to v3

package.json

@@ -29,9 +29,9 @@
     "eleventy-sass": "^2.2.6",
     "glob": "^11.0.1",
     "minify": "^12.1.0",
-    "postcss": "^8.5.2",
+    "postcss": "^8.5.1",
     "replace-in-file": "^8.3.0",
-    "sass": "^1.85.0",
+    "sass": "^1.83.4",
     "uncss": "^0.17.3"
   },
   "dependencies": {

src/_data/donations.json

@@ -2,13 +2,6 @@
   {
     "year": 2025,
     "donations": [
-      {
-        "date": "14.02.2025",
-        "amount": 20,
-        "via": "banktransfer",
-        "from": "ub1x",
-        "first": false
-      },
       {
         "date": "31.01.2025",
         "amount": 10,