Update i104m-go.yml

Author: riclolsen

.github/workflows/i104m-go.yml

@@ -25,8 +25,10 @@ jobs:
     - name: Get dependencies
       working-directory: src/i104m
       run: |
+        apt-get install libpcap-dev
         go env -w GO111MODULE=auto
         go get -v -t -d ./...
+        go mod tidy
         if [ -f Gopkg.toml ]; then
             curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
             dep ensure