Update GA workflow files for the 4.2.z branch

[mdumandag]

While sending a PR to the 4.2.z branch, I saw that it uses the GA
workflows defined in that branch, so I am updating the test runner
and jira trigger workflows so that, the test runner creates
jobs that would pass the merge checks.

The only difference between this test runner and the one in the
master is that, this one does not check broken links in the readme.

[codecov-commenter]

Codecov Report

Merging #495 (5862946) into 4.2.z (da647b8) will increase coverage by 0.32%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            4.2.z     #495      +/-   ##
==========================================
+ Coverage   94.51%   94.83%   +0.32%     
==========================================
  Files         345      345              
  Lines       17547    17554       +7     
==========================================
+ Hits        16584    16647      +63     
+ Misses        963      907      -56     

Impacted Files	Coverage Δ
...otocol/codec/client_authentication_custom_codec.py	50.00% <0.00%> (-23.81%)	⬇️
hazelcast/reactor.py	81.06% <0.00%> (-6.04%)	⬇️
hazelcast/connection.py	91.09% <0.00%> (-1.42%)	⬇️
hazelcast/proxy/base.py	97.40% <0.00%> (-0.65%)	⬇️
hazelcast/invocation.py	93.48% <0.00%> (ø)
hazelcast/proxy/flake_id_generator.py	95.28% <0.00%> (+0.13%)	⬆️
hazelcast/sql.py	97.86% <0.00%> (+0.42%)	⬆️
hazelcast/metrics.py	99.50% <0.00%> (+0.49%)	⬆️
hazelcast/protocol/client_message.py	95.29% <0.00%> (+1.76%)	⬆️
hazelcast/listener.py	94.23% <0.00%> (+1.92%)	⬆️
... and 4 more

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[srknzl]

lgtm but won't we need to update docs and check links in them? we may do so in a patch release.

[srknzl]

note that documentation generation checks for all dead links, not just in README (as far as I know)

[mdumandag]

@srknzl I will do that in a later PR, I just wanted to merge the prerequisite for all others