increase timeout to 5 hours (#13226) (#13232)

### Description
Increase MacOS pipeline timeout to 5 hours



### Motivation and Context
It blocks Release pipeline

### Description
<!-- Describe your changes. -->



### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

tools/ci_build/github/azure-pipelines/templates/c-api-cpu.yml

@@ -138,7 +138,7 @@ jobs:
     clean: all
   pool:
     vmImage: 'macOS-11'
-  timeoutInMinutes:  180
+  timeoutInMinutes:  300
   steps:
     - template: set-version-number-variables-step.yml