chore: upgrade to eslint v9 (#2574)

server/lib/imageproxy.ts

@@ -254,7 +254,7 @@ class ImageProxy {
           imageBuffer: buffer,
         };
       }
-    } catch (e) {
+    } catch {
       // No files. Treat as empty cache.
     }
 

server/lib/notifications/index.ts

@@ -23,7 +23,7 @@ export const hasNotificationType = (
   types: Notification | Notification[],
   value: number
 ): boolean => {
-  let total = 0;
+  let total: number;
 
   // If we are not checking any notifications, bail out and return true
   if (types === 0) {

server/lib/overseerrMerge.ts

@@ -36,7 +36,7 @@ const checkOverseerrMerge = async (): Promise<boolean> => {
   // We have to replace Jellyseerr migrations not working with Overseerr with a custom one
   try {
     // Filter out the Jellyseerr migrations and replace them with the Seerr migration
-    // eslint-disable-next-line @typescript-eslint/ban-types
+    // eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
     const newMigrations: MixedList<string | Function> = migrations
       ?.filter(
         (migration) =>