tests: Use LeakSanitizer to catch future memory leaks

[Jakuje]

Description

Follow-up to #471. The address sanitizer should catch memory leaks, but it needs the configuration, which was missing

https://clang.llvm.org/docs/LeakSanitizer.html

Reviewer's checklist:

• Any issues marked for closing are addressed
• There is a test suite reasonably covering new functionality or modifications
• This feature/change has adequate documentation added
• Code conform to coding style that today cannot yet be enforced via the check style test
• Commits have short titles and sensible commit messages
• Coverity Scan has run if needed (code PR) and no new defects were found

[simo5]

@Jakuje as you are fixing tests, would you mind adding --features standard to kryoptic builds to fix the kryoptic CI as well ?

[Jakuje]

@Jakuje as you are fixing tests, would you mind adding --features standard to kryoptic builds to fix the kryoptic CI as well ?

I started in #473 simplifying the kryoptic build to use dynamic feature, but we need the standard too, which I forgot on first try. Changed now. But it still does not work. Trying now here only the standard feature.

[simo5]

@Jakuje .github/workflows/integration.yml needs the same treatment

[Jakuje]

@Jakuje .github/workflows/integration.yml needs the same treatment

Added. Missed that one.