artifactory: deprecate (#120005)

* artifactory: deprecate

Artifactory 6 is depracted since April 2022

Artifcatory 7 does not look it can easily built from source.
The https://releases.jfrog.io/artifactory/bintray-artifactory/org/artifactory/oss/jfrog-artifactory-oss/7.10.2/jfrog-artifactory-oss-7.10.2-sources.tar.gz
tar contains some build scripts that are specific to jfrogs CI/CD. It looks like they prefer to ship precompiled binaries,
as already stated as a comment in the formula itself.

I was not able to build artifcatory 7 from source.
A previous attempt also failed: https://github.com/Homebrew/homebrew-core/pull/105222

The download count is quite low  (72 in the last 30 days),
so I think we can just redirect users to upstreams pre-compiled packages.

Last but not least, no-one is shipping version 7:
https://repology.org/projects/?search=artifactory

except AUR that just ships the pre-compiled linux package.

* artifactory: fix code style

* artifactory: remove from autobump

Co-authored-by: Rui Chen <rui@chenrui.dev>

.github/workflows/autobump.yml

@@ -44,7 +44,6 @@ env:
     arkade
     armadillo
     arrayfire
-    artifactory
     arturo
     asciidoctorj
     ask-cli

Formula/artifactory.rb

@@ -16,6 +16,8 @@ class Artifactory < Formula
     sha256 cellar: :any_skip_relocation, all: "39f95a12d5e609016171cb09106bdfd211f9ac910a9c1b1ac4241fb64e0fbc8c"
   end
 
+  deprecate! date: "2022-04-20", because: :deprecated_upstream
+
   depends_on "openjdk"
 
   def install