Replace default branch name with main

.github/workflows/ci.yml

@@ -1,6 +1,6 @@
 on:
-  push: {branches: master}
-  pull_request: {branches: master}
+  push: {branches: main}
+  pull_request: {branches: main}
 
 jobs:
   ci:

.github/workflows/integration.yml

@@ -1,12 +1,12 @@
 on:
-  push: {branches: master}
+  push: {branches: main}
 
 jobs:
   integration:
     runs-on: ubuntu-latest
     steps:
       - id: output-set
-        uses: actions/github-script@master
+        uses: actions/github-script@main
         with:
           script: return core.getInput('input-value')
           result-encoding: string

.github/workflows/pull-request-test.yml

@@ -1,6 +1,6 @@
 on:
   pull_request:
-    branches: master
+    branches: main
     types: [opened, synchronize]
 
 jobs:

README.md

@@ -10,9 +10,9 @@ arguments will be provided:
 - `github` A pre-authenticated
   [octokit/rest.js](https://github.com/octokit/rest.js) client
 - `context` An object containing the [context of the workflow
-  run](https://github.com/actions/toolkit/blob/master/packages/github/src/context.ts)
-- `core` A reference to the [@actions/core](https://github.com/actions/toolkit/tree/master/packages/core) package
-- `io` A reference to the [@actions/io](https://github.com/actions/toolkit/tree/master/packages/io) package
+  run](https://github.com/actions/toolkit/blob/main/packages/github/src/context.ts)
+- `core` A reference to the [@actions/core](https://github.com/actions/toolkit/tree/main/packages/core) package
+- `io` A reference to the [@actions/io](https://github.com/actions/toolkit/tree/main/packages/io) package
 
 Since the `script` is just a function body, these values will already be
 defined, so you don't have to (see examples below).

docs/development.md

@@ -25,4 +25,4 @@ Releases are done manually, for now:
 1. Ensure that the build is up to date with `npm run build`.
 1. Bump the [package.json](/package.json#L3) and [package-lock.json](/package-lock.json#L3) version numbers and commit them.
 1. Update documentation (including updated version numbers).
-1. Tag master with the new version number and create a GitHub release.
+1. Tag main with the new version number and create a GitHub release.