Enhancement: Run backward-compatibility analysis with `roave/backward-compatibility-check` #2595

Job	Run time
Coding Standards (8.1, locked)	18s
Backward-compatibility Analysis (8.1, locked)	11s
Code Coverage (8.1, locked)	16s
Dependency Analysis (8.1, locked)	15s
Mutation Tests (8.1, locked)	17s
Refactoring (8.1, locked)	17s
Security Analysis (8.1, locked)	10s
Static Code Analysis (8.1, locked)	11s
Tests (8.1, lowest)	17s
Tests (8.1, locked)	11s
Tests (8.1, highest)	11s
Tests (8.2, lowest)	18s
Tests (8.2, locked)	12s
Tests (8.2, highest)	18s
Tests (8.3, lowest)	15s
Tests (8.3, locked)	14s
Tests (8.3, highest)	16s
	4m 7s

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