chore: fail workflow if chromatic finds changes in examples (#843)

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Currently the workflow passes even though there are changes in the
examples. Thus, one always have to manually check the chromatic app
before merging a PR, which gets tiresome.

### 🔗 Linked issue

Refs #710

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example "Resolves #123" -->

### 📚 Description

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Author: tobiasdiez

.github/workflows/ci-examples.yml

@@ -61,4 +61,6 @@ jobs:
           # exitOnceUploaded: true
           projectToken: ${{ matrix.projectToken }}
           buildScriptName: ${{ matrix.storybookBuildScript }}
+          # Fail workflow if changes are found
+          exitZeroOnChanges: false
           debug: true