Give create codespaces prebuild action right permissions

[safern]

Now that default permissions changed, prebuild action started failing as it needs contents write permissions.

[ghost]

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Issue Details

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Now that default permissions changed, prebuilt action started failing as it needs contents write permissions.

Author:	safern
Assignees:	-
Labels:	area-Infrastructure-libraries
Milestone:	-

[hoyosjs]

This removes all other permissions except for metadata read and content write. If that's the only scope needed,

[safern]

Thanks, yes that's the only scope needed. I've tested it and it works fine.