fix: downgrade srtool image compatible with polkadotv0.9.39

[felixfaisal]

Resolves #1819

The issue as correctly identified by @Kailai-Wang was due to the low version of polkadot being used. We can in the future refer to the release notes of Polkadot which mention against which version of srtools and rustc version it was tested against to build the wasm.

I've tested the fix on my fork here

[Kailai-Wang]

Thanks! There might be multiple places where srtool is used (IIRC)

[felixfaisal]

Hey @Kailai-Wang
Not sure with which polkadot version we will be releasing the litentry parachain runtime, if with 9.39 then I can downgrade everywhere it is being used atleast in GitHub Actions.

[Kailai-Wang]

Hey @Kailai-Wang Not sure with which polkadot version we will be releasing the litentry parachain runtime, if with 9.39 then I can downgrade everywhere it is being used atleast in GitHub Actions.

Next one would be 0.9.42 I believe

[felixfaisal]

So polkadotv0.9.42 is tested against rustc 1.69.0 as mentioned in the release notes. So should I wait until PRs for updating versions are merged and then update the srtools image or focus only on 0.9.39 for now and downgrade it. Let me know what you think.

[Kailai-Wang]

Yes let's wait a bit till 0.9.42 is done and re-test the compatibility with variant srtool version :)

[BillyWooo]

I would suggest to merge it first. After 0.9.42 is done, update the tools again.

[felixfaisal]

So based on the above:
The srtools in the actions is being used in build_wasm and create_release_draft, I will not update create_release_draft as it makes no sense if we are planning on the next release to use 0.9.42. I think build_wasm is more important as of now, I'm assuming it will be used to perform runtime upgrades for the current parachain. Therefore I will merge this PR. Thanks!