Fixes Scrutinizer integration (mostly failing tests) (#682)

* attempt to fix scrutinizer tests; also removing current workaround

* RawDataParserTest: marked a test as memory-heavy

because it keeps failing due to not enough memory:

https://scrutinizer-ci.com/g/smalot/pdfparser/inspections/2ffb5293-e8a3-422b-a726-48229a359df4

* .scrutinizer: fixed some config issues; added options to speed up checks

* at least 1 test keeps failing because of memory; attempt to increase memory in config

* try test again without memory-heave group

.scrutinizer.yml

@@ -1,18 +1,21 @@
 build:
+    cache:
+        directories:
+            - vendor # Cache for already installed composer package -> speed up composer install
     nodes:
         analysis:
+            environment:
+                php:
+                    version: 8.2
+                    ini:
+                        memory_limit: "-1"
+                variables:
+                    XDEBUG_MODE: 'coverage'
             tests:
                 override:
                     - php-scrutinizer-run
                     -
-                        # Forces a certain PHPUnit version (=7.5.x), otherwise some tests fail due
-                        # to not enough memory.
-                        # @https://github.com/smalot/pdfparser/issues/410
-                        # @https://github.com/smalot/pdfparser/pull/412
-                        command: make prepare-for-scrutinizer && make install-dev-tools && make run-phpunit ARGS="--exclude-group memory-heavy --coverage-clover coverage/clover.xml"
+                        command: make install-dev-tools && make run-phpunit ARGS="--migrate-configuration" && make run-phpunit ARGS="--exclude-group memory-heavy --coverage-clover coverage/clover.xml"
                         coverage:
                             file: coverage/clover.xml
                             format: clover
-            environment:
-                php:
-                    version: 7.4

Makefile

@@ -1,13 +1,6 @@
 install-dev-tools:
 	composer update --working-dir=dev-tools
 
-# Workaround to force PHPUnit 7.5.x when running Scrutinizer.
-# Scrutinizer fails due to not enough memory when using a newer PHPUnit version (tested with 9.5).
-# @see: https://github.com/smalot/pdfparser/issues/410
-# @see: https://github.com/smalot/pdfparser/pull/412
-prepare-for-scrutinizer:
-	cd dev-tools && sed -e 's/>=7.5/^7.5/g' composer.json > composer.json2 && rm composer.json && mv composer.json2 composer.json
-
 run-php-cs-fixer:
 	dev-tools/vendor/bin/php-cs-fixer fix $(ARGS)