Apply tagbot_pat patch (#36)

Author: mtfishman

.github/workflows/TagBot.yml

@@ -11,6 +11,6 @@ jobs:
     steps:
       - uses: "JuliaRegistries/TagBot@v1"
         with:
-          token: "${{ secrets.GITHUB_TOKEN }}"
+          token: "${{ secrets.TAGBOT_PAT }}"
           registry: "ITensor/ITensorRegistry"
           ssh: "${{ secrets.DOCUMENTER_KEY }}"

Project.toml

@@ -1,6 +1,6 @@
 name = "BackendSelection"
 uuid = "680c2d7c-f67a-4cc9-ae9c-da132b1447a5"
-version = "0.1.20"
+version = "0.1.21"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
 
 [compat]