enable static build (macos still requires it)

there are no more dependencies required we can do this
fyne-io/systray#24 (comment)

Author: umbynos

.github/workflows/release.yml

@@ -39,6 +39,10 @@ jobs:
       run:
         shell: bash
 
+# by default disable CGO, it's not needed (except on macos)
+    env:
+      CGO_ENABLED: 0
+
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -105,6 +109,7 @@ jobs:
 
       - name: Build the Agent for macos
         env:
+          CGO_ENABLED: 1
           MACOSX_DEPLOYMENT_TARGET: 10.11 # minimum supported version for mac
           CGO_CFLAGS: -mmacosx-version-min=10.11
           CGO_LDFLAGS: -mmacosx-version-min=10.11