bump version in readme

Author: hmarr

README.md

@@ -6,11 +6,11 @@
 
 Automatically approve GitHub pull requests.
 
-**Important:** use v3 or later, as v2 uses Node.js 12, which is deprecated. If you're on an old version of GHES (earlier than 3.4) you may need to use v2 until you can upgrade. v1 was designed for the initial GitHub Actions beta, and no longer works.
+**Important:** use v4 or later, as earlier versions use deprecated versions of node. If you're on an old version of GHES (with an old version of the node interpreter) you may need to use an easier version until you can upgrade.
 
 ## Usage instructions
 
-Create a workflow file (e.g. `.github/workflows/auto-approve.yml`) that contains a step that `uses: hmarr/auto-approve-action@v3`. Here's an example workflow file:
+Create a workflow file (e.g. `.github/workflows/auto-approve.yml`) that contains a step that `uses: hmarr/auto-approve-action@v4`. Here's an example workflow file:
 
 ```yaml
 name: Auto approve
@@ -22,7 +22,7 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - uses: hmarr/auto-approve-action@v3
+      - uses: hmarr/auto-approve-action@v4
 ```
 
 Combine with an `if` clause to only auto-approve certain users. For example, to auto-approve [Dependabot][dependabot] pull requests, use:
@@ -39,7 +39,7 @@ jobs:
       pull-requests: write
     if: github.actor == 'dependabot[bot]'
     steps:
-      - uses: hmarr/auto-approve-action@v3
+      - uses: hmarr/auto-approve-action@v4
 ```
 
 If you want to use this action from a workflow file that doesn't run on the `pull_request` or `pull_request_target` events, use the `pull-request-number` input:
@@ -60,7 +60,7 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-    - uses: hmarr/auto-approve-action@v3
+    - uses: hmarr/auto-approve-action@v4
       with:
         pull-request-number: ${{ github.event.inputs.pullRequestNumber }}
 ```
@@ -79,7 +79,7 @@ jobs:
       pull-requests: write
     if: github.actor == 'dependabot[bot]'
     steps:
-      - uses: hmarr/auto-approve-action@v3
+      - uses: hmarr/auto-approve-action@v4
         with:
           review-message: "Auto approved automated PR"
 ```
@@ -99,7 +99,7 @@ jobs:
   auto-approve:
     runs-on: ubuntu-latest
     steps:
-      - uses: hmarr/auto-approve-action@v3
+      - uses: hmarr/auto-approve-action@v4
         with:
           github-token: ${{ secrets.SOME_USERS_PAT }}
 ```
@@ -122,4 +122,4 @@ If you're using a [CODEOWNERS file](https://docs.github.com/en/github/creating-c
 
 ## Development and release process
 
-Each major version corresponds to a branch (e.g. `v2`, `v3`). The latest major version (`v3` at the time of writing) is the repository's default branch. Releases are tagged with semver-style version numbers (e.g. `v1.2.3`).
+Each major version corresponds to a branch (e.g. `v3`, `v4`). The latest major version (`v4` at the time of writing) is the repository's default branch. Releases are tagged with semver-style version numbers (e.g. `v1.2.3`).