Combining dependabot core version constraint (latest_allowable_version) with existing composer version constraint

[thavaahariharangit]

What are you trying to accomplish?

Combining both dependabot core version constraint and existing composer version constraint

Anything you want to highlight for special attention from reviewers?

Please let me know if there is any scenarios missed out on this PR.

How will you know you've accomplished your goal?

Ran Junit's and ensured that I am getting expected error message.

For ex:

 Your requirements could not be resolved to an installable set of packages.
         Problem 1
           - Root composer.json requires php-http/client-implementation ==6.0.0 ^1.0, it could not be found in any version, but the following packages provide it:
             - symfony/http-client Provides powerful methods to fetch HTTP resources synchronously or asynchronously

above test result shows, combination of both version constraints
ex:
==6.0.0 ^1.0
==6.0.0 - dependabot core version constraint
- space for intersection or and condition
^1.0 - composer constraint

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.

[thesebas]

exactly at the moment when this was merged and since then I got new error on many projects:

Dependabot failed to update your dependencies because there was an error resolving your PHP dependency files.

Dependabot encountered the following error:

Could not parse version constraint == >= 2.1.0: Invalid version string ">= 2.1.0"

[thavaahariharangit]

exactly at the moment when this was merged and since then I got new error on many projects:

Dependabot failed to update your dependencies because there was an error resolving your PHP dependency files.

Dependabot encountered the following error:

Could not parse version constraint == >= 2.1.0: Invalid version string ">= 2.1.0"

Thanks @thesebas

we have the solution for above in this #10176 - In Progress