Fixing some issues on RIT workflow

[fmacleal]

Issues fixed:
1 - Remove the trigger on push for master and *-rc -> we don't need that anymore since we are running it for every commit on PRs against these branches.
2 - Send the status of the execution to slack
3 - Solve the issue that the status of an execution triggered via workflow doesn't update the PR status.
And if we need to use a different branch for RIT, Powpeg and RIT in the PR, it won't change the status to
green after the workflow_dispatch execution -> We will do that adding a parsing on the description, looking
for the branch that need to be used for that PR. If there is no branch configured on the description, we will
try to use the default one.

Branches to be used by RIT:
fed:vovchyk/jackson-ver-bump
rskj:vovchyk/jackson-ver-bump

Description

Motivation and Context

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• Tests for the changes have been added (for bug fixes / features)
• Requires Activation Code (Hard Fork)

• Other information:

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud