Github/Oryx build has fixed 15 minute build timeout

My CI/CD action file on github builds and deploys an Angular SPA to an Azure Static Web App. The build duration is a little random (usually between 14.8 minutes to 15+ minutes). As long as the build takes less than 15 minutes, it succeeds and deploys. However, any time the build exceeds 15 minutes...it forcibly reaches a timeout and is aborted.

> Oryx has timed out while building app, the current limit is 15 minutes. Failing build.

I have not seen anywhere in github literature indicating that (1) such a 15 minute limit exists and accordingly (2) I've seen nothing indicating how to solve it. I think this is a problem exclusive to the `Azure/static-web-apps-deploy@v1` action ([repo here](https://github.com/Azure/static-web-apps-deploy)).

The job that has the timeout errors looks like this:

```
jobs:
build_and_deploy_job:
timeout-minutes: 30
if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.action != 'closed')
runs-on: ubuntu-latest
name: Build and Deploy Job
steps:
- uses: actions/checkout@v2
with:
submodules: true
- name: Build And Deploy
id: builddeploy
uses: Azure/static-web-apps-deploy@v1
with:
azure_static_web_apps_api_token: ${{ secrets.AZURE_STATIC_WEB_APPS_API_TOKEN_RED_CLIFF_0183FBE0F }}
repo_token: ${{ secrets.GITHUB_TOKEN }} # Used for Github integrations (i.e. PR comments)
action: "upload"
###### Repository/Build Configurations - These values can be configured to match your app requirements. ######
# For more information regarding Static Web App workflow configurations, please visit: https://aka.ms/swaworkflowconfig
app_location: "/alirrium-rfp-poc" # App source code path
api_location: "" # Api source code path - optional
output_location: "dist/alirrium-rfp-poc" # Built app content directory - optional
app_build_command: "npm run build -- --configuration=testing" # Custom build command for app content - optional
###### End of Repository/Build Configurations ######
```
Please notice that in the above job, I have inserted a `timeout-minutes: 30` directive. Two observations about that directive. First, I found that directive in some random repo rather than in github documentation. Obviously it is not being acknowledged, but at least the build-system doesn't complain about it. Second, I have anecdotal evidence to suggest that the `timeout-minutes` directive is honored _only if an `app_build_command` custom command is not configured_. As is, I need the custom command.

To iterate again, [github doesn't say anything about the existence of a 15 minute timeout limit](https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration#usage-limits). And yet this timeout is happening any time the build happens to exceed 15 minutes.

It seems like there are two bugs here:

- There is no reason for there to be a 15 minute limit in the first place, particularly when github documentation states `Each job in a workflow can run for up to 6 hours of execution time`.
- The `timeout-minutes` directive should be honored, regardless of whether a `app_build_command` custom build command is or is not given.

**Device info (if applicable):**
- OS: This is an Oryx build of an Angular SPA, configured to build with Node 14.16.0