btoa expects a string not a buffer

Author: peter-evans

dist/index.js

@@ -525,7 +525,7 @@ function createPullRequest(inputs) {
                         core.debug(`Reading contents of file: '${file}'`);
                         fileChanges.additions.push({
                             path: file,
-                            contents: btoa(fs.readFileSync(file, 'utf8'))
+                            contents: btoa(fs.readFileSync(file, 'utf8').toString())
                         });
                     }
                     for (const file of deletedFiles) {

src/create-pull-request.ts

@@ -327,7 +327,7 @@ export async function createPullRequest(inputs: Inputs): Promise<void> {
           core.debug(`Reading contents of file: '${file}'`)
           fileChanges.additions!.push({
             path: file,
-            contents: btoa(fs.readFileSync(file, 'utf8'))
+            contents: btoa(fs.readFileSync(file, 'utf8').toString())
           })
         }