Use precice develop for tests

[erikscheurer]

This PR modifies the tests to build precice develop instead of using the latest precice docker container as discussed in #47.

[erikscheurer]

At the moment, only the build test uses precice develop, this can easily be added, but may be open for debate as the python bindings to my understanding also use the docker container to test the solver dummies. The solverdummies would be the only test affected by this, as the others use a dummy solverinterface.

[erikscheurer]

We are now facing the issue, that the tests would run fine, but the versions of julia are outdated in a way, that leads the version of libstdc++ being newer in the container that we use (ubuntu-latest) than the ones shipped with julia.
This error has been discussed in #44 and is now included in the julia bindings readme. It could be solved by preloading the system libraries, or by upgrading to newer julia versions compared to the system.

[IshaanDesai]

We are now facing the issue, that the tests would run fine, but the versions of julia are outdated in a way, that leads the version of libstdc++ being newer in the container that we use (ubuntu-latest) than the ones shipped with julia. This error has been discussed in #44 and is now included in the julia bindings readme. It could be solved by preloading the system libraries, or by upgrading to newer julia versions compared to the system.

I do not fully understand what can be a solution here. Are you suggesting that we drop support for older Julia versions? The test failures seem to not be related to Julia versions, because some tests for 1.6.0 pass and others fail.

[erikscheurer]

These changes break the tests on develop, but this should be fixed with #47.
Due to older LTS versions of Julia, we have to preload libstdc++ and libcurl as described in #44 and now the README.

[IshaanDesai]

Looks good 👍 please squash and merge.