Description

issue #1905

We are renaming our default branch master to main. In this PR, I have updated all references to notification-api's master branch to main.

Type of change

Please check the relevant option(s).

[x] Internal
[ ] Bug fix (non-breaking change which fixes an issue)
[ ] Hotfix (quick fix for an urgent bug or issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] This change requires a documentation update
[ ] Documentation changes only

Renamed master to main and deployed branch.
Ran Github Actions with Workflow branch as 1905-rename-master-to-main and deployment branch as main

Example

[x] build.yml
[x] cd-pipeline.yml Per @cris-oddball, cannot test until PR is merged into main.
[x] deploy-release.yml Per @cris-oddball, cannot test until PR is merged into main.
[x] deploy_lambda_dev.yml
[x] deployment.yml
[x] dev_deploy.yml
[x] lambda-function.yml
[x] load-test-email-delivery-time.yml Per @cris-oddball request, I will not be testing these. And instead, these will be tested on Perf later. These tests are being rewritten and does not matter if they break.
[x] load-test-sms-response-time.yml Per @cris-oddball request, I will not be testing these. And instead, these will be tested on Perf later. These tests are being rewritten and does not matter if they break.
[x] test-github-actions.yml Not tested, this was an old project that is not being used. But the reference from master to main has been updated
[x] tests.yml Tested by making a minor commit after the default branch name was changed from master to main in repo and main was redeployed. This triggered the workflow to run for PR.
[x] update-datadog-image.yml (Not tested, this was an old project that is not being used. But the reference from master to main has been updated)

[x] I have assigned myself to this PR
[x] PR has an appropriate title: #9999 - What the thing does
[x] PR has a detailed description, including links to specific documentation
[x] I have added the appropriate labels to the PR.
[x] I did not remove any parts of the template, such as checkboxes even if they are not used
[N/A] My code follows the style guidelines of this project
[x] I have performed a self-review of my own code
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have made corresponding changes to any documentation
[x] My changes generate no new warnings
[N/A] I have added tests that prove my fix is effective or that my feature works. Testing guidelines
[x] I have ensured the latest main is merged into my branch and all checks are green prior to review
[x] New and existing unit tests pass locally with my changes
[N/A] Any dependent changes have been merged and published in downstream modules
[x] The ticket is now moved into the DEV test column
[x] I have added a bullet for this work to the Engineering Key Wins slide for review