Update GitHub Actions workflows. (#773)

This PR was triggered by @t0yv0 generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit
[b8b29dc51d452160accc76a310efd6eb38760b50](b8b29dc51d).

Co-authored-by: Pulumi Bot <bot@pulumi.com>

.github/workflows/claude.yml

@@ -115,7 +115,7 @@ jobs:
             }
           claude_args: |
             --max-turns 50
-            --allowedTools "Skill,Edit,MultiEdit,Write,Read,Glob,Grep,LS,Bash(upgrade-provider *),Bash(./scripts/upstream.sh *),Bash(git *),Bash(GIT_EDITOR=* git *),Bash(make *),Bash(gh *),Bash(mkdir *),Bash(go install *),Bash(ls *),Bash(test *),Bash(cat *),Bash(pwd),Bash(head *),Bash(tail *),Bash(tee *),Bash(rg *),Bash(grep *),Bash(sed *),Bash(awk *),Bash(find *)"
+            --allowedTools "Skill,Edit,MultiEdit,Write,Read,Glob,Grep,LS,Bash(upgrade-provider *),Bash(./scripts/upstream.sh *),Bash(git *),Bash(GIT_EDITOR=* git *),Bash(make *),Bash(gh *),Bash(mkdir *),Bash(go install *),Bash(go mod tidy *),Bash(ls *),Bash(test *),Bash(cat *),Bash(pwd),Bash(head *),Bash(tail *),Bash(tee *),Bash(rg *),Bash(grep *),Bash(sed *),Bash(awk *),Bash(find *)"
         # If the claude action fails you don't get any logs on what claude was doing
         # Uploading the artifact allows you to download the artifact from the UI
       - name: Upload Claude review output on failure

.github/workflows/weekly-pulumi-update.yml

@@ -109,9 +109,7 @@ jobs:
 
         msg="Automated upgrade: bump pulumi/pulumi to ${ver}"
 
-        # See https://github.com/cli/cli/issues/6485#issuecomment-2560935183 for --head workaround
-
-        gh pr create -t "$msg" -b "$msg" --head "$(git branch --show-current)"
+        gh pr create -t "$msg" -b "$msg"
       env:
         GITHUB_TOKEN: ${{ steps.esc-secrets.outputs.PULUMI_BOT_TOKEN }}
     name: weekly-pulumi-update