7490abe Update to Rack 2.2.3

Authored and Committed by vondruch 2 years ago
    Update to Rack 2.2.3
    
    Please note that `memcache-client` is not required since 2.1.0:
    https://github.com/rack/rack/pull/1421
    
    And concurrent-ruby since 2.0.4:
    https://github.com/rack/rack/commit/261825768e3e769959f3eb30ec9f24a707a9b2ac
    
    Resolves: rhbz#2091121
    Resolves: rhbz#2113698
    
        
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