DA5-5 fix api version

[vlajos]

Mainly to avoid gradle mixing version numbers.
Required to run the e2e repository's tests.
Background:
https://r3holdco.slack.com/archives/C039J1A3ZQB/p1698657116094349

[corda-jenkins-ci02]

Scanning for breaking API changes introduced by this PR

Scan Failed: https://ci02.dev.r3.com/job/Corda5/job/corda-api-compatibility/job/PR-1323/1/

If the breaking changes are intentional, run ./gradlew cementApi and get approval from the Corda team leads.

[corda-jenkins-ci02]

Jenkins build for PR 1323 build 1

Build Successful:
Jar artifact version produced by this PR: 5.1.0.200-DA-alpha-1698850811403

[corda-jenkins-ci02]

Non-blocking downstream job failed for corda-non-functional-test

https://ci02.dev.r3.com/job/Corda5/job/corda-api-compatibility/job/PR-1323/1/ has failed for PR 1323 build 1

Please investigate if your changes may have broken compilation on https://github.com/corda/corda-non-functional-test

[corda-jenkins-ci02]

Non-blocking downstream job failed for corda-e2e-test

https://ci02.dev.r3.com/job/Corda5/job/corda-api-compatibility/job/PR-1323/1/ has failed for PR 1323 build 1

Please investigate if your changes may have broken compilation on https://github.com/corda/corda-e2e-tests