ci: update CI configurations and Go version to 1.22

- Update Codecov action from v4 to v5 in GitHub workflows
- Remove `exportloopref` linter and add `copyloopvar` linter in GolangCI configuration
- Update Go version from 1.21 to 1.22 in go.mod

Signed-off-by: Bo-Yi Wu <[email protected]>

Author: appleboy

.github/workflows/testing.yml

@@ -63,6 +63,6 @@ jobs:
         run: make test
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           flags: ${{ matrix.os }},go-${{ matrix.go }}

.golangci.yml

@@ -7,7 +7,6 @@ linters:
     - dogsled
     - dupl
     - errcheck
-    - exportloopref
     - exhaustive
     - gochecknoinits
     - goconst
@@ -33,6 +32,7 @@ linters:
     - unused
     - whitespace
     - gofumpt
+    - copyloopvar
 
 run:
   timeout: 3m

go.mod

@@ -1,6 +1,6 @@
 module github.com/appleboy/gorush
 
-go 1.21
+go 1.22
 
 require (
 	firebase.google.com/go/v4 v4.14.1