Fix GA workflow YAML indentation

Signed-off-by: Thane Thomson <connect@thanethomson.com>

.github/workflows/proto-lint.yml

@@ -14,8 +14,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-    - uses: actions/checkout@v3
-    - uses: bufbuild/buf-setup-action@v1.1.0
-    - uses: bufbuild/buf-lint-action@v1
-      with:
-        input: 'proto'
+      - uses: actions/checkout@v3
+      - uses: bufbuild/buf-setup-action@v1.1.0
+      - uses: bufbuild/buf-lint-action@v1
+        with:
+          input: 'proto'