Bump UBCSailbot/sailbot_workspace from 1.5.1 to 1.6.0 (#13)

Bumps [UBCSailbot/sailbot_workspace](https://github.com/ubcsailbot/sailbot_workspace) from 1.5.1 to 1.6.0.
- [Release notes](https://github.com/ubcsailbot/sailbot_workspace/releases)
- [Commits](UBCSailbot/sailbot_workspace@v1.5.1...v1.6.0)

---
updated-dependencies:
- dependency-name: UBCSailbot/sailbot_workspace
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
   test-definitions:
     # sailbot_workspace: use locally-defined file
     # other repositories: set to UBCSailbot/sailbot_workspace/.github/workflows/test_definitions.yml@<release>
-    uses: UBCSailbot/sailbot_workspace/.github/workflows/test_definitions.yml@v1.5.1
+    uses: UBCSailbot/sailbot_workspace/.github/workflows/test_definitions.yml@v1.6.0
     # see https://github.com/UBCSailbot/sailbot_workspace/blob/main/.github/workflows/test_definitions.yml
     # for documentation on the inputs and secrets below
     with: