Update process_release.yml

first the code needs to be checked out before looking for go.mod file

.github/workflows/process_release.yml

@@ -8,11 +8,11 @@ jobs:
   upload-release-assets:
     runs-on: ubuntu-latest
     steps:
+    - uses: actions/checkout@v3
     - name: Set up Go using version from go.mod
       uses: actions/setup-go@v3
       with:
         go-version-file: 'go.mod'
-    - uses: actions/checkout@v3
     - name: Build assets
       env:
         TAG: ${{ github.ref }}