ci: bump client common size limit

Author: joker23

.github/workflows/sdk-client.yml

@@ -32,4 +32,4 @@ jobs:
           target_file: 'packages/shared/sdk-client/dist/esm/index.mjs'
           package_name: '@launchdarkly/js-client-sdk-common'
           pr_number: ${{ github.event.number }}
-          size_limit: 39000
+          size_limit: 40000