fix: removal failure of freeConnection causing infinite loop #754

Job	Run time
cleanup	19s
Node.js 16.x - DB mysql:8.0.18 - SSL=0 Compression=0	1m 13s
Node.js 16.x - DB mysql:8.0.22 - SSL=0 Compression=0	1m 26s
Node.js 16.x - DB mysql:8.0.33 - SSL=0 Compression=0	1m 21s
Node.js 16.x - DB mysql:5.7 - SSL=0 Compression=0	1m 25s
Node.js 18.x - DB mysql:8.0.18 - SSL=0 Compression=0	1m 12s
Node.js 18.x - DB mysql:8.0.22 - SSL=0 Compression=0	1m 14s
Node.js 18.x - DB mysql:8.0.33 - SSL=0 Compression=0	1m 18s
Node.js 18.x - DB mysql:5.7 - SSL=0 Compression=0	1m 15s
Node.js 20.x - DB mysql:8.0.18 - SSL=0 Compression=0	1m 22s
Node.js 20.x - DB mysql:8.0.22 - SSL=0 Compression=0	1m 41s
Node.js 20.x - DB mysql:8.0.33 - SSL=0 Compression=0	1m 20s
Node.js 20.x - DB mysql:5.7 - SSL=0 Compression=0	1m 18s
Node.js 20.x - DB mysql:8.0.33 - SSL=0 Compression=1	1m 28s
Node.js 20.x - DB mysql:8.0.33 - SSL=1 Compression=0	1m 21s
Node.js 16.x - DB mysql:8.0.18 - SSL=0 Compression=1	1m 17s
Node.js 16.x - DB mysql:8.0.18 - SSL=1 Compression=0	1m 19s
Node.js 16.x - DB mysql:8.0.18 - SSL=1 Compression=1	1m 23s
Node.js 14.x - DB mysql:5.7 - SSL=0 Compression=0	1m 46s
Node.js 16.x - DB datagrip/mysql:5.1 - SSL=0 Compression=0	24s
coverage	52s
	26m 14s

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