Bump scitools/workflows from 2023.04.1 to 2023.05.0 (#101)

Bumps [scitools/workflows](https://github.com/scitools/workflows) from 2023.04.1 to 2023.05.0.
- [Release notes](https://github.com/scitools/workflows/releases)
- [Commits](SciTools/workflows@2023.04.1...2023.05.0)

---
updated-dependencies:
- dependency-name: scitools/workflows
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci-manifest.yml

@@ -23,4 +23,4 @@ concurrency:
 jobs:
   manifest:
     name: "check-manifest"
-    uses: scitools/workflows/.github/workflows/ci-manifest.yml@2023.04.1
+    uses: scitools/workflows/.github/workflows/ci-manifest.yml@2023.05.0