Allow to set null secret value for Applications if it's public #448

Job	Run time
ruby_edge (gemfiles/rails_6_0.gemfile)	22s
ruby_edge (gemfiles/rails_6_1.gemfile)	16s
rails_edge	21s
ruby_edge (gemfiles/rails_7_0.gemfile)	17s
Ruby 3.0 (gemfiles/rails_6_0.gemfile)	29s
ruby_edge (gemfiles/rails_7_1.gemfile)	24s
Ruby 3.0 (gemfiles/rails_6_1.gemfile)	27s
Ruby 3.0 (gemfiles/rails_7_0.gemfile)	27s
Ruby 3.0 (gemfiles/rails_7_1.gemfile)	31s
Ruby 3.1 (gemfiles/rails_6_0.gemfile)	28s
Ruby 3.1 (gemfiles/rails_6_1.gemfile)	29s
Ruby 3.1 (gemfiles/rails_7_0.gemfile)	39s
Ruby 3.1 (gemfiles/rails_7_1.gemfile)	32s
Ruby 3.2 (gemfiles/rails_6_0.gemfile)	36s
Ruby 3.2 (gemfiles/rails_6_1.gemfile)	33s
Ruby 3.2 (gemfiles/rails_7_0.gemfile)	37s
Ruby 3.2 (gemfiles/rails_7_1.gemfile)	30s
Ruby 3.3 (gemfiles/rails_6_0.gemfile)	40s
Ruby 3.3 (gemfiles/rails_6_1.gemfile)	41s
Ruby 3.3 (gemfiles/rails_7_0.gemfile)	41s
Ruby 3.3 (gemfiles/rails_7_1.gemfile)	39s
	10m 39s

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