Experiment with Go versions higher than 1.17.

Tests fail to link with Go 1.17, but seems fine at 1.20, so something must have changed at some point...

.github/workflows/test.yml

@@ -17,7 +17,8 @@ jobs:
         go-version:
         # Check the earliest and two trailing versions, to keep
         # maintainance of this file reasonable.
-        - 1.17
+        - 1.18
+        - 1.19
         - oldstable
         - stable
         include:
@@ -38,6 +39,12 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
 
+    - name: Set Up Workspace
+      # Submodules shouldn't cause a download.
+      run: |
+        set -o pipefail
+        go work init . $(ls ./deps/*_*/cgo.go | xargs -r dirname)
+
     - name: Run Tests With Coverage
       run: go test -v -coverprofile coverage.out ./...
       env: