Add file provider to ci matrix

Signed-off-by: Nelo-T. Wallus <[email protected]>

Author: ntnn

.github/workflows/ci.yml

@@ -23,8 +23,10 @@ jobs:
           - ""
           - examples/kind
           - providers/kind
+          - providers/file
           - examples/cluster-api
           - providers/cluster-api
+          - providers/file
     name: golangci-lint [${{ matrix.working-directory }}]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # tag=v4.2.2