Update bazel-gazelle to rev 2 via SR 757534
    
    https://build.opensuse.org/request/show/757534
    by user dimstar_suse
    - Update to version 0.19.0:
      * Update to rules_go v0.20.0 (#660)
      * Export IsStandard (#659)
      * Update language/go/std_package_list.go (#658)
      * go_repository should correctly identify build files and respect build_file_name (#655)
      * Update known proto dependency resolution tables (#653)
      * repo: repository directive (#651)
      * Allow passing additional visibility to internal packages (#649)
      * language/go: simpler submodule visibility (#648)
      * repo, language/go: refactor Go-specific functionality out of repo (#647)
      * Update boilerplate for rules_go v0.19.4 [skip ci] (#645)
      * Revert "language/go, go_repository: submodule visibility (#637)" (#641)
      * Excluding consumed generated files from go_library (#643)
      * Making resolveGo public (#642)
      * language/go, go_repository: subm