Update python-Flask-SQLAlchemy to version 2.5.1 / rev 7 via SR 958744
    
    https://build.opensuse.org/request/show/958744
    by user mcepl + dimstar_suse
    - Work around test suite failure inside OBS: BuildRequire krb5.
      krb5 is a dependency to python (via tirpc), and inside OBS we get
      a slightly limited version of it as krb5-mini. The test suite of
      this package fails to pass with the mini flavor though. As -mini
      is never offered to actual users, we can get away with this
      workaround.