Update akaunting to 3.1.21 (#4271)

akaunting/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       APP_PORT: 80
 
   app:
-    image: akaunting/akaunting:3.1.20@sha256:2f23086ed1d2b1e928923a3d8d8d914a44ab1f4528d3e9798e5e8018a69bb091
+    image: akaunting/akaunting:3.1.21@sha256:918bbc77981e5b96ab6aa6838491cfa7c98cb4ee7bbf9532ee083e7e66d04255
     # does not work rootless
     #user: "1000:1000"
     restart: on-failure

akaunting/umbrel-app.yml

@@ -3,7 +3,7 @@ id: akaunting
 name: Akaunting
 tagline: An intuitive accounting solution for small businesses and freelancers
 category: finance
-version: "3.1.20"
+version: "3.1.21"
 port: 8773
 description: >-
   📊 Akaunting is a powerful open-source accounting software that simplifies financial management for small businesses, freelancers, and entrepreneurs. It offers an all-in-one solution to manage income, expenses, invoices, and financial reports, making it easier to maintain an organized and transparent overview of your finances. With its intuitive design and flexible features, Akaunting helps you save time on administrative tasks while improving accuracy and efficiency.
@@ -56,13 +56,8 @@ gallery:
   - 4.jpg
   - 5.jpg
 releaseNotes: >-
-  This update brings several new features and important fixes to improve your accounting experience:
-    - You can now attach files to document payments for better record keeping
-    - Empty pages now have helpful action buttons to guide you
-    - Fixed issues with recurring invoices that were causing errors when creating or updating them
-    - Resolved problems with bill status not updating correctly when creating or updating expense transactions
-    - Fixed calculation errors and improved overall performance
-    - Improved handling of attachments when updating bills and through the API
+  This update includes an important fix:
+    - Fixed cache module version issue
 
 
   Full release notes can be found at https://github.com/akaunting/akaunting/releases