Try with PAT

Author: nyonson

.github/workflows/update-toolchains.yml

@@ -15,3 +15,5 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: rust-bitcoin/rust-bitcoin-maintainer-tools/.github/actions/update-stable@master
+        with:
+          token: ${{ secrets.RBMT_PRS }}