Use GITHUB_TOKEN instead of GH_TOKEN (#3110)

also use `pull_request_target` instead of `pull_request` for add to project action

Author: guimachiavelli

.github/workflows/code-sample-automation.yml

@@ -1,10 +1,10 @@
 name: Add PR to Code Samples Changes project
 
 on:
-  pull_request:
+  pull_request_target:
     types: [opened, edited, synchronize]
     paths:
-      - .code-samples.meilisearch.yaml
+      - '.code-samples.meilisearch.yaml'
 
 jobs:
   add-pr-to-project:
@@ -13,4 +13,4 @@ jobs:
       - uses: actions/add-to-project@f5473ace9aeee8b97717b281e26980aa5097023f
         with:
           project-url: https://github.com/orgs/meilisearch/projects/44
-          github-token: ${{ secrets.GH_TOKEN }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/preview-info.yml

@@ -5,7 +5,7 @@ on:
     types: [opened]
 
 env:
-  GH_TOKEN: ${{ secrets.GH_TOKEN }}
+  GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   CURRENT_BRANCH: ${{ github.event.pull_request.head.ref }}
 
 jobs: