Bump helm/chart-testing-action from 2.3.1 to 2.6.1 (#3463) #85

Job	Run time
Build for Linux (linux, amd64)	46s
Build for Linux (linux, 386)	43s
Unit tests	1m 32s
Build for Windows (windows, amd64)	55s
Linting	1m 46s
WASM build test	0s
Initial tests passed	2s
Upgrade tests from HEAD-2	1m 12s
Upgrade tests	1m 12s
Integration tests	1m 13s
Complement (SQLite native)	1m 11s
Sytest (SQLite native)	1m 2s
Complement (SQLite Cgo)	1m 10s
Sytest (SQLite Cgo)	1m 1s
Complement (PostgreSQL)	1m 12s
Sytest (PostgreSQL)	1m 1s
Integration tests passed	1s
Update Docker images	1s
	16m 0s

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