ci: enable golangci-lint cache (#451)

Remove skip-cache: true and restore skip-pkg-cache: true and
skip-build-cache: true so that we still cache golangci-lint results
which skip-cache: true disables.

.github/workflows/test-lint.yml

@@ -32,7 +32,8 @@ jobs:
         with:
           version: ${{ matrix.golangci }}
           args: "--out-${NO_FUTURE}format colored-line-number"
-          skip-cache: true
+          skip-pkg-cache: true
+          skip-build-cache: true
 
       - name: Go Build
         run: go build ./...