fix: revert to github.token

Author: MishaKav

.github/workflows/bump-gitstream-core.yml

@@ -32,7 +32,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
         with:
-          token: ${{ secrets.CI_ACCOUNT_PAT }}
+          token: ${{ github.token }}
 
       - name: Set version to ENV
         run: |
@@ -64,7 +64,7 @@ jobs:
       - name: Create PR for ${{ env.VERSION }}
         id: create-pr
         env:
-          GH_TOKEN: ${{ secrets.CI_ACCOUNT_PAT }}
+          GH_TOKEN: ${{ github.token }}
         run: |
           echo -e "${{ inputs.description }}" > pr_description.txt
           git config --global user.name 'GitHub Actions Bot'