Use supported Go version in go.mod

.github/workflows/release.yml

@@ -1,6 +1,9 @@
 name: Release
 
 on:
+  push:
+    branches: [main]
+    tags: ['v*']
   release:
     types: [published]
 
@@ -40,7 +43,9 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          # Use a pinned Go version instead of parsing go.mod to avoid
+          # failing on unsupported prerelease versions in the module file.
+          go-version: '1.23'
 
       - name: Download dependencies
         run: go mod download

go.mod

@@ -1,6 +1,6 @@
 module github.com/binsquare/envmap
 
-go 1.25.4
+go 1.23
 
 require (
 	github.com/1Password/connect-sdk-go v1.5.0