Megaport fixes

[i3dnet-akoopen]

Megaport fixes:

• Megaport sends initial maintenance announcements and reminder announcements. This parser was failing for the initial maintenance announcement which starts with "Please be advised that" instead of "This is a reminder". This fix should account for both emails.
• For their intial maintenance announcement the start and end date are not in separate paragraphs (in the reminder email this is the case). This fix should account for both emails.
• The "purpose of maintenance:"-section is used for the summary field of the maintenance. It seems that in newer emails the contents is being put in a separate paragraph. Account for both scenarios with this fix.

Lastly, I will also reach out to Megaport and ask if they can implement the BCOP standard as that seems more sensible then having to make these fixes :)

[jvanderaa]

@i3dnet-akoopen can you take a look at the tests that are failing?

[i3dnet-akoopen]

@jvanderaa hmm! could you give me some pointers on how I can resolve these tests failing?

[itdependsnetworks]

You can run the tests locally, but they show up here: https://github.com/networktocode/circuit-maintenance-parser/actions/runs/22308122203/job/64560316105.

So far there is:

1. pylint failing
2. need to add a changelog (see changes folder for example)
3. the parser is not matching expected results (i think an extra space)

[i3dnet-akoopen]

@itdependsnetworks thanks for you input, this the first time for me sending a PR for this project. I think I should fixed those issues now, could you trigger a test-run again?