ci(meta): update workflow to use Go 1.20 and provide GITHUB_TOKEN

Author: jimeh

.github/workflows/update-metadata.yml

@@ -14,16 +14,13 @@ jobs:
         uses: actions/checkout@v2
         with:
           ref: meta
-      - uses: actions/setup-go@v2
+      - uses: actions/setup-go@v4
         with:
-          go-version: 1.17
-      - uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('builder/**/go.sum') }}
-          restore-keys: ${{ runner.os }}-go-
+          go-version: 1.20
       - name: update total downloads shield JSON
         run: go run . badges downloads -o total-downloads/shield.json
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
       - name: commit and push changes to meta branch
         uses: stefanzweifel/git-auto-commit-action@v4
         with: