build(deps): bump io.grpc:grpc-api from 1.81.0 to 1.82.1 in /sdk/java/grpc - #3027

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea, step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/