use pathlib for paths #3038

Job	Run time
Filter	5s
Build - UI Platform	1m 31s
Style [pre-commit]	35s
Style [Documentation]	49s
Tests - Full Migration [SQLite]	0s
Tests - Migrations [PostgreSQL]	0s
Tests - API Schema Documentation	3m 52s
Tests - DB [MySQL]	17m 58s
Tests - Platform UI	0s
Tests - DB [SQLite] + Coverage	18m 1s
Style - Classic UI [JS]	1m 17s
Tests - DB [PostgreSQL]	16m 28s
Tests - inventree-python	6m 1s
Push new schema	0s
	1h 6m 37s

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