Disable caching for the setup-go Action

The cache key used relies on the existence of a go.sum file. Since we
have no expectation for Go source code, including that file, and since
we already include the Go cache in our job caching, we can safely
disable caching in the Action.

Author: mcdonnnj

.github/workflows/build.yml

@@ -29,6 +29,9 @@ jobs:
       - id: setup-go
         uses: actions/setup-go@v4
         with:
+          # There is no expectation for actual Go code so we disable caching as
+          # it relies on the existence of a go.sum file.
+          cache: false
           go-version: "1.19"
       - name: Lookup Go cache directory
         id: go-cache