Fix requirements updates related failures

Rollback some dependencies and update test failures for other
dependency updates.

Reference: #4447
Signed-off-by: Ayan Sinha Mahapatra <asmahapatra@aboutcode.org>

Author: AyanSinhaMahapatra

requirements.txt

@@ -30,7 +30,7 @@ html5lib==1.1
 id==1.5.0
 idna==3.11
 imagesize==1.4.1
-importlib_metadata==8.7.1
+importlib_metadata==6.2.1
 inflection==0.5.1
 intbitset==4.1.0
 jaraco.functools==4.4.0
@@ -63,7 +63,7 @@ py==1.11.0
 pyahocorasick==2.3.0
 pycparser==2.23
 pygmars==1.0.0
-Pygments==2.19.2
+Pygments==2.13.0
 pymaven-patch==0.3.2
 pyparsing==3.3.1
 pytz==2022.1

tests/packagedcode/data/npm/casepath/package.json.expected

@@ -396,6 +396,6 @@
     "repository_download_url": "https://registry.npmjs.org/casesensitivepathswebpackpluginDemo/-/casesensitivepathswebpackpluginDemo-0.0.1.tgz",
     "api_data_url": "https://registry.npmjs.org/casesensitivepathswebpackpluginDemo/0.0.1",
     "datasource_id": "npm_package_json",
-    "purl": "pkg:npm/casesensitivepathswebpackpluginDemo@0.0.1"
+    "purl": "pkg:npm/casesensitivepathswebpackplugindemo@0.0.1"
   }
 ]

tests/packagedcode/data/npm/npm-shrinkwrap/npm-shrinkwrap.json-expected

@@ -703,7 +703,7 @@
         "extra_data": {}
       },
       {
-        "purl": "pkg:composer/mikey179/vfsStream",
+        "purl": "pkg:composer/mikey179/vfsstream",
         "extracted_requirement": "^1.6",
         "scope": "require-dev",
         "is_runtime": false,

tests/packagedcode/data/phpcomposer/framework/composer.json.expected

@@ -240,7 +240,7 @@ def test_scan_with_timeout_errors():
     # we use a short timeout and a --test-slow-mode --email scan to simulate an error
     args = ['-e', '--test-slow-mode', '--timeout', '0.01', '--verbose',
             test_file, '--json', result_file]
-    result = run_scan_click(args, expected_rc=1)
+    result = run_scan_click(args, expected_rc=1, processes=None)
     assert 'ERROR: Processing interrupted: timeout' in result.output
     assert 'patchelf.pdf' in result.output
     result_json = json.loads(open(result_file).read())
@@ -891,7 +891,7 @@ def test_check_error_count():
     # we use a short timeout and a --test-slow-mode --email scan to simulate an error
     args = ['-e', '--test-slow-mode', '--timeout', '0.1',
             test_dir, '--json', result_file]
-    result = run_scan_click(args, expected_rc=1)
+    result = run_scan_click(args, expected_rc=1, processes=None)
     output = result.output
     output = output.replace('\n', ' ').replace('   ', ' ')
     output = output.split(' ')