build action: use go.mod version

.github/workflows/build_releases.yml

@@ -8,7 +8,6 @@ on:
 
 env:
   GITHUB_REF: ${{ github.ref }}
-  GO_VERSION: '1.24.4'
 
 jobs:
   build-all:
@@ -24,7 +23,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '${{ env.GO_VERSION }}'
+          go-version-file: 'go.mod'
 
       - name: Build All
         run: |