[internal] Update GitHub Actions workflow files (#63)

Author: pulumi-bot

.github/workflows/artifact-cleanup.yml

@@ -0,0 +1,13 @@
+jobs:
+  remove-old-artifacts:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Remove old artifacts
+      uses: c-hive/gha-remove-artifacts@v1
+      with:
+        age: 1 month
+        skip-tags: true
+name: cleanup
+on:
+  schedule:
+  - cron: 0 1 * * *

.github/workflows/command-dispatch.yml

@@ -1,19 +1,35 @@
-name: Command Dispatch for testing
-on:
-  issue_comment:
-    types: [created, edited]
-
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+  NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+  NUGET_PUBLISH_KEY: ${{ secrets.NUGET_PUBLISH_KEY }}
+  PROVIDER: command
+  PULUMI_ACCESS_TOKEN: ${{ secrets.PULUMI_ACCESS_TOKEN }}
+  PULUMI_API: https://api.pulumi-staging.io
+  PULUMI_GO_DEP_ROOT: ${{ github.workspace }}/..
+  PULUMI_LOCAL_NUGET: ${{ github.workspace }}/nuget
+  PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+  SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+  TRAVIS_OS_NAME: linux
 jobs:
   command-dispatch-for-testing:
+    if: ${{ github.event.issue.pull_request }}
+    name: command-dispatch-for-testing
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Run Build
-        uses: peter-evans/slash-command-dispatch@v2
-        with:
-          token: ${{ secrets.EVENT_PAT }}
-          reaction-token: ${{ secrets.GITHUB_TOKEN }}
-          commands: run-acceptance-tests
-          permission: write
-          issue-type: pull-request
-          repository: pulumi/pulumi-command
+    - name: Checkout Repo
+      uses: actions/checkout@v2
+    - uses: peter-evans/slash-command-dispatch@v2
+      with:
+        commands: run-acceptance-tests
+        issue-type: pull-request
+        permission: write
+        reaction-token: ${{ secrets.GITHUB_TOKEN }}
+        repository: pulumi/pulumi-command
+        token: ${{ secrets.PULUMI_BOT_TOKEN }}
+name: command-dispatch
+on:
+  issue_comment:
+    types:
+    - created
+    - edited