get changes against version number in customised release.yml file

My objective is to create a GitHub action that, when the release.yml file changes, would either update an existing release or create a new release after checking if that release version is new checking against the previous commit. Ultimately would like to add this to other projects where I would like to add actions and release.yml.

The current issue I am having is difficulty in wrapping my head around how to go about is detecting changes in the release.yml file against the version.

For the very basic use case of adding a new release a simple approach of creating action.yml and adding

version_1_0: # id of input
description: '1.0'
required: true
default: 'The most important changes are downgrading the artifact to java7 (from 8) and switching to gmavenplus plugin to compile groovy.
      Besides that, there is a lot of restructuring inside of the pom.xml file

      # Misc

      * Polishing (f2ec0bb, 9e2ae89 and 8654493)

      _Reviewed by_: @user' 

and later in index.js file

const version = core.getInput('version_1_0');
core.setOutput("ver", version);

gives the output which later in the GitHub actions file can be fetched and cleaned and later forwarded to the release step to be used to create the release

description=$
        echo $description
        description="${description//'%'/'%25'}" 
        description="${description//$'\n'/'%0A'}"
        description="${description//$'\r'/'%0D'}" 
        echo $description
        echo "::set-output name=test::$description"

Unfortunately, this approach proved insufficient when I attempt for a file-based trigger based on diffs.

sample release.yml

1.0:
body:
      'The most important changes are downgrading the artifact to java7 (from 8) and switching to gmavenplus plugin to compile groovy.
      Besides that, there is a lot of restructuring inside of the pom.xml file

      # Misc

      * Polishing (f2ec0bb, 9e2ae89 and 8654493)

      _Reviewed by_: @user'

2.0: body: 'The most important changes are downgrading the artifact to java7 (from 8) and switching to gmavenplus plugin to compile groovy.

      # Misc

      * Polishing (f2ec0bb, 9e2ae89 and 8654493)

      _Reviewed by_: @user'           

from get changes against version number in customised release.yml file