Add jobs for PHP `8.3` to the CI (#767) #1166

Job	Run time
Tests without optional packages (7.2, lowest, 4.4.*)	37s
Tests without optional packages (7.4, highest)	37s
Tests without optional packages (8.0, lowest, 4.4.*)	32s
Tests (7.2, 4.4.*, highest)	41s
Tests without optional packages (8.3, highest)	1m 8s
Tests (7.2, 5.*, highest)	38s
Tests (7.3, 4.4.*, highest)	50s
Tests (7.3, 5.*, highest)	45s
Tests (7.4, 4.4.*, highest)	34s
Tests (7.4, 5.*, highest)	38s
Tests (8.0, 4.4.*, highest)	35s
Tests (8.0, 5.*, highest)	37s
Tests (8.0, 6.*, highest)	50s
Tests (8.1, 4.4.*, highest)	45s
Tests (8.1, 5.*, highest)	43s
Tests (8.1, 6.*, highest)	39s
Tests (8.2, 4.4.*, highest)	32s
Tests (8.2, 5.*, highest)	36s
Tests (8.2, 6.*, highest)	48s
Tests (8.3, 4.4.*, highest)	56s
Tests (8.3, 5.*, highest)	1m 44s
Tests (8.3, 6.*, highest)	53s
Tests (7.2, 4.4.*, lowest)	43s
Tests (7.2, 5.*, lowest)	43s
Tests (8.0, 6.*, lowest)	47s
	18m 51s

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