fixed version go

Author: jerson

.github/workflows/gomobile.yml

@@ -49,7 +49,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '^1.14'
+          go-version: '1.14.13'
           # using this version to support more Architectures in the fat file: Openpgp are: armv7 i386 x86_64 arm64
       - name: Install Gomobile
         run: |