Add 'test' label to count stock option #6

Job	Run time
Build - Web UI	1m 49s
Filter	9s
Style [pre-commit]	1m 13s
Style [Documentation]	49s
Tests - API Schema Documentation	6m 35s
Tests - Full Migration [SQLite]	0s
Tests - Migrations [PostgreSQL]	0s
Style [Typecheck]	0s
Security [Zizmor]	0s
Tests - inventree-python	0s
Tests - DB [MySQL]	0s
Tests - Web UI	0s
Tests - Performance	0s
Tests - DB [SQLite] + Coverage ${{ matrix.python_version }}	0s
Tests - DB [PostgreSQL]	0s
Push new schema	0s
	10m 35s

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