[Release|CI/CD] Add eth-rpc binary to release draft artifacts (#10934)

Address: paritytech/release-engineering#281
(cherry picked from commit f87563a)

Author: EgorPopelyaev

.github/scripts/common/lib.sh

@@ -355,6 +355,9 @@ function get_s3_url_base() {
       frame-omni-bencher)
         printf "https://releases.parity.io/frame-omni-bencher"
         ;;
+      eth-rpc)
+        printf "https://releases.parity.io/eth-rpc"
+        ;;
       *)
         printf "UNSUPPORTED BINARY $name"
         exit 1

.github/workflows/release-30_publish_release_draft.yml

@@ -235,7 +235,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        binary: [ polkadot, polkadot-execute-worker, polkadot-prepare-worker, polkadot-parachain, polkadot-omni-node, frame-omni-bencher, chain-spec-builder ]
+        binary: [ polkadot, polkadot-execute-worker, polkadot-prepare-worker, polkadot-parachain, polkadot-omni-node, frame-omni-bencher, chain-spec-builder, eth-rpc ]
         target: [ x86_64-unknown-linux-gnu, aarch64-apple-darwin ]
 
     steps: