Add omni bencher & chain-spec-builder bins to release (paritytech#4557)

Closes: paritytech#4354

This PR adds the steps to build and attach `frame-omni-bencher` and
`chain-spec-builder` binaries to the release draft

## TODO
- [x] add also chain-spec-builder binary
- [ ] ~~check/investigate Kian's comment: `chain spec builder. Ideally I
want it to match the version of the sp-genesis-builder crate`~~ see
[comment](paritytech#4518 (comment))
- [ ] Backport to `polkadot-sdk@1.11` release, so we can use it for next
fellows release: polkadot-fellows/runtimes#324
- [ ] Backport to `polkadot-sdk@1.12` release

---------

Co-authored-by: Branislav Kontur <bkontur@gmail.com>

.github/workflows/release-30_publish_release_draft.yml

@@ -23,7 +23,7 @@ jobs:
           echo "stable=$RUST_STABLE_VERSION" >> $GITHUB_OUTPUT
 
   build-runtimes:
-    uses: "./.github/workflows/srtool.yml"
+    uses: "./.github/workflows/release-srtool.yml"
     with:
        excluded_runtimes: "substrate-test bp cumulus-test kitchensink minimal-template parachain-template penpal polkadot-test seedling shell frame-try sp solochain-template"