Update govulncheck.yml

Signed-off-by: Ryan Parman <rparman@northwood-labs.com>

Author: skyzyx

.github/workflows/govulncheck.yml

@@ -32,6 +32,7 @@ jobs:
           allowed-endpoints: >
             api.github.com:443
             github.com:443
+            golang.org:443
             objects.githubusercontent.com:443
             proxy.golang.org:443
             release-assets.githubusercontent.com:443