Bump actions/attest-build-provenance from 2.1.0 to 2.2.0 (#71)

Author: dependabot[bot]

.github/workflows/dotnet.yaml

@@ -216,7 +216,7 @@ jobs:
           name: nuget-package
           path: packed
       - name: Attest Build Provenance
-        uses: actions/attest-build-provenance@7668571508540a607bdfd90a87a560489fe372eb # v2.1.0
+        uses: actions/attest-build-provenance@520d128f165991a6c774bcb264f323e3d70747f4 # v2.2.0
         with:
           subject-path: "packed/WoofWare.DotnetRuntimeLocator.*.nupkg"