chore: Update copilot-usage action to version 4.1 in README examples

Author: austenstone

README.md

@@ -39,14 +39,14 @@ jobs:
     name: Run Action
     runs-on: ubuntu-latest
     steps:
-      - uses: austenstone/copilot-usage@v4
+      - uses: austenstone/copilot-usage@v4.1
         with:
           github-token: ${{ secrets.TOKEN }}
 ```
 #### Example get team usage
 
 ```yml
-      - uses: austenstone/copilot-usage@v4
+      - uses: austenstone/copilot-usage@v4.1
         with:
           github-token: ${{ secrets.TOKEN }}
           organization: 'org-slug'
@@ -56,7 +56,7 @@ jobs:
 #### Example get enterprise usage
 
 ```yml
-      - uses: austenstone/copilot-usage@v4
+      - uses: austenstone/copilot-usage@v4.1
         with:
           github-token: ${{ secrets.TOKEN }}
           enterprise: 'enterprise-slug'
@@ -65,7 +65,7 @@ jobs:
 #### Example get CSV
 
 ```yml
-      - uses: austenstone/copilot-usage@v4
+      - uses: austenstone/copilot-usage@v4.1
         with:
           github-token: ${{ secrets.TOKEN }}
           csv: true
@@ -87,7 +87,7 @@ jobs:
   run:
     runs-on: ubuntu-latest
     steps:
-      - uses: austenstone/copilot-usage@v4
+      - uses: austenstone/copilot-usage@v4.1
         with:
           github-token: ${{ secrets.TOKEN }}
       - uses: austenstone/[email protected]