Speedup audb.Dependencies to list conversions

[hagenw]

Speeds up conversion to Python list by using x.tolist() instead of list(x) in the following methods/properties:

• audb.Dependencies.__getitem__()
• audb.Dependencies.attachments
• audb.Dependencies.attachment_ids
• audb.Dependencies.files
• audb.Dependencies.media
• audb.Dependencies.removed_media
• audb.Dependencies.tables

Method	main	this branch
Dependency.__call__()	0.000 s	0.000 s
Dependency.__contains__()	0.000 s	0.000 s
Dependency.__get_item__()	0.000 s	0.000 s
Dependency.__len__()	0.000 s	0.000 s
Dependency.__str__()	0.006 s	0.006 s
Dependency.archives	0.147 s	0.149 s
Dependency.attachments	0.045 s	0.031 s
Dependency.attachment_ids	0.045 s	0.030 s
Dependency.files	0.185 s	0.025 s
Dependency.media	0.264 s	0.136 s
Dependency.removed_media	0.250 s	0.126 s
Dependency.table_ids	0.053 s	0.040 s
Dependency.tables	0.046 s	0.031 s
Dependency.archive(1000 files)	0.005 s	0.006 s
Dependency.bit_depth(1000 files)	0.004 s	0.004 s
Dependency.channels(1000 files)	0.004 s	0.004 s
Dependency.checksum(1000 files)	0.004 s	0.004 s
Dependency.duration(1000 files)	0.004 s	0.004 s
Dependency.format(1000 files)	0.004 s	0.004 s
Dependency.removed(1000 files)	0.004 s	0.004 s
Dependency.sampling_rate(1000 files)	0.004 s	0.004 s
Dependency.type(1000 files)	0.005 s	0.004 s
Dependency.version(1000 files)	0.004 s	0.004 s
Dependency._add_attachment()	0.061 s	0.074 s
Dependency._add_media(1000 files)	0.050 s	0.065 s
Dependency._add_meta()	0.124 s	0.118 s
Dependency._drop()	0.078 s	0.076 s
Dependency._remove()	0.068 s	0.062 s
Dependency._update_media()	0.073 s	0.074 s
Dependency._update_media_version(1000 files)	0.008 s	0.008 s