Save 'strlen' value in variable (#270) #633

Job	Run time
Validate Columnar 13	4m 31s
Lint acceptance	2m 53s
Validate Columnar 14	4m 15s
Validate Columnar 15	4m 20s
Validate Columnar 16	4m 13s
Build and Validate Postgres 13	6m 1s
Build and Validate Postgres 14	6m 4s
Build and Validate Postgres 15	6m 0s
Build and Validate Spilo	0s
Build and Validate Postgres 16	6m 4s
Push Spilo	0s
Benchmark Hydra Spilo image (${{ matrix.benchmark }})	0s
Push Postgres 13	2m 48s
Push Postgres 14	1m 22s
Push Postgres 15	3m 5s
Push Postgres 16	2m 38s
Benchmark Hydra Postgres image (warehouse-10G) / Run Benchmark	31m 22s
Benchmark Hydra Postgres image (clickbench-100M) / Run Benchmark	2h 0m 24s
	3h 26m 0s

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