CI: update token to PAT

Author: Apolo151

.github/workflows/cross_release.yaml

@@ -90,4 +90,4 @@ jobs:
             dist/equation-solver-Linux/equation-solver-linux
             dist/equation-solver-Windows/equation-solver-windows.exe
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GH_PAT }}