Fix arm64 runner memory

They have 6GB memory per 2vCPUs not 8GB

Author: enescakir

github-actions-integration/runner-types.mdx

@@ -50,11 +50,11 @@ runs-on: ubicloud-gpu
 | `ubicloud-standard-8-ubuntu-2204`      | 8    | 32GB   | 200GB |
 | `ubicloud-standard-16-ubuntu-2204`     | 16   | 64GB   | 300GB |
 | `ubicloud-standard-30-ubuntu-2204`     | 30   | 120GB  | 400GB |
-| `ubicloud-standard-2-arm-ubuntu-2204`  | 2    | 8GB    | 86GB  |
-| `ubicloud-standard-4-arm-ubuntu-2204`  | 4    | 16GB   | 150GB |
-| `ubicloud-standard-8-arm-ubuntu-2204`  | 8    | 32GB   | 200GB |
-| `ubicloud-standard-16-arm-ubuntu-2204` | 16   | 64GB   | 300GB |
-| `ubicloud-standard-30-arm-ubuntu-2204` | 30   | 120GB  | 400GB |
+| `ubicloud-standard-2-arm-ubuntu-2204`  | 2    | 6GB    | 86GB  |
+| `ubicloud-standard-4-arm-ubuntu-2204`  | 4    | 12GB   | 150GB |
+| `ubicloud-standard-8-arm-ubuntu-2204`  | 8    | 24GB   | 200GB |
+| `ubicloud-standard-16-arm-ubuntu-2204` | 16   | 48GB   | 300GB |
+| `ubicloud-standard-30-arm-ubuntu-2204` | 30   | 90GB   | 400GB |
 | `ubicloud-gpu`                         | 6    | 32GB   | 180GB |
 
 <Note>