Prepare release of v1.2

I have cherry-picked the removal of the ahead check:
jitterbit#25

This seems to be a change Jitterbit's community agrees on:
jitterbit#17

Build this change and prepare v1.2 release.

README.md

@@ -1,7 +1,7 @@
 [![CI status](https://github.com/Ana06/get-changed-files/workflows/Test/badge.svg)](https://github.com/Ana06/get-changed-files/actions?query=event%3Apush+branch%3Amain)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE.txt)
 
-This project is a fork of https://github.com/jitterbit/get-changed-files, which supports `pull_request_target` and allow to filter files using regular expressions.
+This project is a fork of https://github.com/jitterbit/get-changed-files, which supports `pull_request_target`, allow to filter files using regular expressions and removes the ahead check.
 
 # Get All Changed Files
 
@@ -15,7 +15,7 @@ The `steps` output context exposes the output names `all`, `added`, `modified`,
 See [action.yml](action.yml)
 
 ```yaml
-- uses: Ana06/get-changed-files@v1.1
+- uses: Ana06/get-changed-files@v1.2
   with:
     # Format of the steps output context.
     # Can be 'space-delimited', 'csv', or 'json'.
@@ -38,7 +38,7 @@ Consider using one of the other formats if that's the case.
 
 ```yaml
 - id: files
-  uses: Ana06/get-changed-files@v1.1
+  uses: Ana06/get-changed-files@v1.2
   with:
     filter: '*.php'
 - run: |
@@ -51,7 +51,7 @@ Consider using one of the other formats if that's the case.
 
 ```yaml
 - id: files
-  uses: Ana06/get-changed-files@v1.1
+  uses: Ana06/get-changed-files@v1.2
   with:
     format: 'csv'
 - run: |
@@ -65,7 +65,7 @@ Consider using one of the other formats if that's the case.
 
 ```yaml
 - id: files
-  uses: Ana06/get-changed-files@v1.1
+  uses: Ana06/get-changed-files@v1.2
   with:
     format: 'json'
 - run: |

dist/index.js

@@ -3567,11 +3567,6 @@ function run() {
                 core.setFailed(`The GitHub API for comparing the base and head commits for this ${github_1.context.eventName} event returned ${response.status}, expected 200. ` +
                     "Please submit an issue on this action's GitHub repo.");
             }
-            // Ensure that the head commit is ahead of the base commit.
-            if (response.data.status !== 'ahead') {
-                core.setFailed(`The head commit for this ${github_1.context.eventName} event is not ahead of the base commit. ` +
-                    "Please submit an issue on this action's GitHub repo.");
-            }
             const regex = new RegExp(`/${filter}\\b`, 'g');
             // Get the changed files from the response payload.
             const files = response.data.files.filter(file => file.filename.match(regex));