chore: reduce network flakines on GH hosted runners

OS-neutral interface to disable TCP/UDP offload to fix flaky networking on GitHub-hosted runners

See https://github.com/smorimoto/tune-github-hosted-runner-network/blob/main/action.yml

.github/workflows/ci-test-go.yml

@@ -96,6 +96,23 @@ jobs:
         working-directory: ./${{ inputs.project-directory }}
         run: go build
 
+      - name: Tune Linux Network
+        if: ${{ runner.os == 'Linux' }}
+        shell: bash
+        run: sudo ethtool -K eth0 tx off rx off
+
+      - name: Tune Windows Network
+        if: ${{ runner.os == 'Windows' }}
+        shell: pwsh
+        run: Disable-NetAdapterChecksumOffload -Name * -TcpIPv4 -UdpIPv4 -TcpIPv6 -UdpIPv6
+
+      - name: Tune macOS Network
+        if: ${{ runner.os == 'macOS' }}
+        shell: bash
+        run: |
+          sudo sysctl -w net.link.generic.system.hwcksum_tx=0
+          sudo sysctl -w net.link.generic.system.hwcksum_rx=0
+
       - name: go test
         # only run tests on linux, there are a number of things that won't allow the tests to run on anything else
         # many (maybe, all?) images used can only be build on Linux, they don't have Windows in their manifest, and