ci: Pin scylladb docker to fix integration tests

[mathbunnyru]

It seems that new scylladb versions have changed SimpleStrategy that we use and now code fails with:

C++ exception with description "Could not create keyspace: future::get(): SimpleStrategy doesn't support tablet replication" thrown in the test fixture's constructor.

This should fix it for now in integration tests, but we should take a closer look if we need to migrate the database

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.61%. Comparing base (3073288) to head (f51a501).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3126   +/-   ##
========================================
  Coverage    82.61%   82.61%           
========================================
  Files          397      397           
  Lines        16034    16034           
  Branches      8399     8399           
========================================
+ Hits         13246    13247    +1     
  Misses        1667     1667           
+ Partials      1121     1120    -1     

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[godexsoft]

We should be careful with scylla and their driver.. we have seen that updating the driver also broke things last time we tried. My understanding is that this change is pinning the older version, right?

[mathbunnyru]

We should be careful with scylla and their driver.. we have seen that updating the driver also broke things last time we tried. My understanding is that this change is pinning the older version, right?

Yes, it's pinning the version before the latest release, which broke something.
And this change is tests-only, no effect on production.