feat(srgssr-middleware): use metadata instead of cause when an error occurs

[amtins]

Description

Video.js in version 8.11.1 offers the possibility of providing more detail when an error occurs. To this end, the metadata property, which is an object, has been added. This object also has an errorType property, giving more context on the error that has occurred. Finally, the metadata object can host any other custom property.

Pillarbox has a similar mechanism, except that instead of naming the metadata property, it's called cause and has a type property. The term cause has been borrowed directly from the Error object, so as not to introduce a new term.

However, to remain consistent with video.js, the term cause has been dropped in favor of metadata.

Changes made

• update of srgssr-middleware
• update unit tests
• update video.js dependency

[github-actions[bot]]

Coverage report

St.:grey_question:	Category	Percentage	Covered / Total
🟢	Statements	98.39%	489/497
🟢	Branches	93.44%	228/244
🟢	Functions	100%	136/136
🟢	Lines	99.16%	473/477

Test suite run success

153 tests passing in 9 suites.

Report generated by 🧪jest coverage report action from 9a4a9edbcc5296f93b834b304ec643fa9e902f26