Update to go1.17.5

This is now required by u-root.

Signed-off-by: Ryan O'Leary <ryanoleary@google.com>

.github/workflows/ci.yml

@@ -73,14 +73,20 @@ jobs:
 
       - name: Install dependent packages
         run: |
+          set -ex
           sudo apt-get update
           sudo apt-get install gcc-aarch64-linux-gnu gcc-arm-linux-gnueabi{,hf} libelf-dev u-boot-tools
+          # We need this newer version of Go.
+          wget https://go.dev/dl/go1.17.5.linux-amd64.tar.gz
+          sudo rm -rf /usr/local/go
+          sudo tar -C /usr/local -xzf go1.17.5.linux-amd64.tar.gz
 
       # Runs a set of commands using the runners shell
       - name: Make ${{ matrix.mainboard }} kernel
         run: |
+          set -ex
           cd mainboards
-          PATH=$PATH:$GOPATH/bin
+          PATH=$GOPATH/bin:/usr/local/go/bin:$PATH
           cd $(echo ${{ matrix.mainboard }} | tr '-' '/')
           make fetch
           make flashkernel