fixing ios version

.github/workflows/ios.yml

@@ -21,6 +21,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
+          # we are using this version to avoid conflict with fast_rsa, they will be using 1.14.13
           go-version: '1.14.15'
       - name: Build
         run: make binding_ios_armv7