fix: maven staging timeout

[iliapolo]

Maven staging often takes longer than the default 5 minutes. Increase to 10.

Currently we are seeing the following error:

Waiting for operation to complete...
....................................................................................................
[WARNING] TIMEOUT after 302.4 s
[ERROR] Rule failure while trying to close staging repository with ID "softwareamazon-7956".
[ERROR] 
[ERROR] Nexus Staging Rules Failure Report
[ERROR] ==================================
[ERROR] 
[ERROR] 
[ERROR] Cleaning up local stage directory after a Rule failure during close of staging repositories: []
[ERROR]  * Deleting context 4714fd1f794.properties
[ERROR] Cleaning up remote stage repositories after a Rule failure during close of staging repositories: []
[ERROR]  * Dropping failed staging repository with ID "softwareamazon-7956" (Rule failure during close of staging repositories: []).

Side note

We already implemented this change years ago in publib, we should really switch over to publib.

See cdklabs/publib#30

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