Update to checkout v2

Author: peter-evans

.github/workflows/slash-command-dispatch.yml

@@ -11,7 +11,7 @@ jobs:
       # Checkout is necessary here due to referencing a local action.
       # It's also necessary when using the 'config-from-file' option.
       # Otherwise, avoid using checkout to keep this workflow fast.
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
 
       # Basic configuration
       - name: Slash Command Dispatch

README.md

@@ -144,7 +144,7 @@ jobs:
   slashCommandDispatch:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Slash Command Dispatch
         uses: peter-evans/slash-command-dispatch@v1
         with: