ci: upgrade php version to launch roave/backward-compatibility-check #24

Job	Run time
linter / PHP-CS-Fixer	1m 28s
test / Build (8.0)	19s
linter / PHPStan (8.0)	45s
test / Adapter (8.2, async-aws/simple-s3:^1.0, spec/Gaufrette/Adapter/AsyncAwsS3Spec.php)	15s
test / Build (8.1)	24s
linter / PHPStan (8.1)	41s
test / Adapter (8.2, aws/aws-sdk-php:^3.158, spec/Gaufrette/Adapter/AwsS3Spec.php)	17s
test / Build (8.2)	14s
bc-break / BC Check	31s
linter / PHPStan (8.2)	35s
test / Adapter (8.2, google/apiclient:^2.12, spec/Gaufrette/Adapter/GoogleCloudStorageSpec.php)	21s
test / Adapter (8.2, doctrine/dbal:^2.3, spec/Gaufrette/Adapter/DoctrineDbalSpec.php)	45s
test / Adapter (8.2, doctrine/dbal:^3.4, spec/Gaufrette/Adapter/DoctrineDbalSpec.php)	13s
test / Adapter (8.2, league/flysystem:^1.0, spec/Gaufrette/Adapter/FlysystemSpec.php)	22s
test / Adapter (8.2, microsoft/azure-storage-blob:^1.0, spec/Gaufrette/Adapter/AzureBlobStore)	22s
test / Adapter (8.2, mongodb/mongodb:^1.1, spec/Gaufrette/Adapter/GridFSSpec.php)	16s
test / Adapter (8.2, phpseclib/phpseclib:^2.0, spec/Gaufrette/Adapter/PhpseclibSftpSpec.php)	58s
	8m 46s

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