chore: upgrade go version to 1.20

.github/workflows/build.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
 
 env:
-  GO_VERSION: 1.19
+  GO_VERSION: 1.20
   FLUTTER_VERSION: 3.10.6
 
 permissions:

.github/workflows/release.yml

@@ -17,7 +17,7 @@ on:
       - "Dockerfile"
 
 env:
-  GO_VERSION: 1.19
+  GO_VERSION: 1.20
 
 permissions:
   contents: write

.github/workflows/test.yml

@@ -27,7 +27,7 @@ on:
       - "go.sum"
 
 env:
-  GO_VERSION: 1.19
+  GO_VERSION: 1.20
   FLUTTER_VERSION: 3.10.6
 
 jobs:

go.mod

@@ -1,6 +1,6 @@
 module github.com/GopeedLab/gopeed
 
-go 1.19
+go 1.20
 
 require (
 	github.com/anacrolix/missinggo/v2 v2.7.2-0.20230527121029-a582b4f397b9