SDK-2897: Add integrator.lock file to .gitignore #1419

Job	Run time
Docker / Alpine / PHP 8.0 / Frontend & Assets	9m 15s
Docker / Alpine / PHP 8.0 / MariaDB / Robot	28m 29s
PHP 8.0 / MariaDB / Acceptance / Alpine	24m 36s
Docker / Alpine / PHP 8.1 / PostgreSQL / Robot	31m 49s
PHP 8.0 / MariaDB / Functional / Alpine	12m 59s
PHP 8.0 / MariaDB / Glue / Alpine	8m 3s
PHP 8.0 / PostgreSQL / Functional / Debian	10m 57s
PHP 8.0 / PostgreSQL / Acceptance / Alpine	21m 50s
PHP 8.0 / PostgreSQL / Functional / Alpine	17m 14s
PHP 8.1 / MariaDB / Acceptance / Alpine	23m 23s
PHP 8.1 / MariaDB / Functional / Alpine	10m 50s
PHP 8.1 / MariaDB / Glue / Alpine	8m 17s
PHP 8.1 / PostgreSQL / Acceptance / Alpine	22m 32s
PHP 8.1 / PostgreSQL / Glue / Alpine	8m 38s
PHP 8.1 / PostgreSQL / Functional / Alpine	14m 56s
Static analysis / PHP 8.0 (8.0)	14m 26s
Static analysis / PHP 8.0 (8.1)	14m 29s
	4h 42m 43s

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