upgrade to go 1.20

.github/workflows/ci.yaml

@@ -56,9 +56,8 @@ jobs:
       - uses: chainguard-dev/actions/goimports@main
 
       - name: Run Mage
-        uses: magefile/mage-action@2c1951143e54356ebe6a0c6c971bae325b5b50f1 # v2.1.0
+        uses: magefile/mage-action@3b833fb24c0d19eed3aa760b9eb285b4b84f420f # v2.3.0
         with:
-          version: v1.14.0
           args: -v ci
 
   check-docs:
@@ -102,4 +101,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@0ad9a0988b3973e851ab0a07adf248ec2e100376 # v3.3.1
         with:
-          version: v1.50.1
+          version: v1.51.0

.github/workflows/release.yaml

@@ -71,9 +71,8 @@ jobs:
           password: ${{ secrets.DOCKER_PASSWORD }}
 
       - name: Run Mage
-        uses: magefile/mage-action@2c1951143e54356ebe6a0c6c971bae325b5b50f1 # v2.1.0
+        uses: magefile/mage-action@3b833fb24c0d19eed3aa760b9eb285b4b84f420f # v2.3.0
         with:
-          version: v1.14.0
           args: -v release
         env:
           GITHUB_TOKEN: "${{ secrets.CI_TOKEN }}"

.golangci.yml

@@ -1,29 +1,29 @@
 linters:
   enable:
-  - asciicheck
-  - deadcode
-  - depguard
-  - errcheck
-  - errorlint
-  - gofmt
-  - goimports
-  - gosec
-  - gocritic
-  - importas
-  - prealloc
-  - revive
-  - misspell
-  - stylecheck
-  - unconvert
-  - whitespace
+    - asciicheck
+    - depguard
+    - errcheck
+    - errorlint
+    - gofmt
+    - goimports
+    - gosec
+    - gocritic
+    - importas
+    - prealloc
+    - revive
+    - misspell
+    - stylecheck
+    - unconvert
+    - unused
+    - whitespace
 output:
   uniq-by-line: false
 issues:
   exclude-rules:
-  - path: _test\.go
-    linters:
-    - errcheck
-    - gosec
+    - path: _test\.go
+      linters:
+        - errcheck
+        - gosec
   max-issues-per-linter: 0
   max-same-issues: 0
 run:

go.mod

@@ -1,6 +1,6 @@
 module github.com/helm/chart-releaser
 
-go 1.19
+go 1.20
 
 require (
 	github.com/MakeNowJust/heredoc v1.0.0

pkg/releaser/releaser.go

@@ -73,7 +73,7 @@ var letters = []rune("abcdefghijklmnopqrstuvwxyz0123456789")
 const chartAssetFileExtension = ".tgz"
 
 func init() {
-	rand.Seed(time.Now().UnixNano())
+	rand.New(rand.NewSource(time.Now().UnixNano())) // nolint: gosec
 }
 
 func (c *DefaultHTTPClient) Get(url string) (resp *http.Response, err error) {