Reduce macos runner coverage due to capacity (#13686)

### Motivation and Context

Reduce macos runner coverage due to capacity

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### Description

Reduce macos runner coverage due to capacity

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### Contribution Checklist

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- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
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raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

Author: moonbox3

.github/workflows/python-unit-tests.yml

@@ -21,6 +21,11 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         experimental: [false]
         test-suite: ["unit-all-except-dapr", "dapr"]
+        exclude:
+          - python-version: "3.10"
+            os: macos-latest
+          - python-version: "3.11"
+            os: macos-latest
         include:
           - python-version: "3.13"
             os: "ubuntu-latest"