fix(ci): fix eslint compatibility, downgrade to v8, and fix lint errors

components/ContactContent.tsx

@@ -2,6 +2,7 @@
 
 import React, { useState } from "react";
 import Image from "next/image";
+import Link from "next/link";
 import { Mail, MapPin, CheckCircle } from "lucide-react";
 import { Button } from "./Button";
 import { Counter } from "./Counter";
@@ -57,7 +58,7 @@ export default function Contact() {
           buttonText: t("form.tryAgain") || "Erneut versuchen",
         });
       }
-    } catch (error) {
+    } catch {
       setStatusModal({
         isOpen: true,
         type: "error",
@@ -279,12 +280,12 @@ export default function Contact() {
                     <p className="text-xs text-slate-400 text-center">
                       {t.rich("form.privacyNote", {
                         link: (chunks) => (
-                          <a
+                          <Link
                             href="/datenschutz"
                             className="text-accent hover:underline font-semibold"
                           >
                             {chunks}
-                          </a>
+                          </Link>
                         ),
                       })}
                     </p>