CI - Fix spellcheck and Flake8 failures affecting all pull requests

.flake8

@@ -8,4 +8,5 @@ per-file-ignores =
     test_collections/manual_tests/**/*:E501,W291
     test_collections/app1_tests/**/*:E501
     test_collections/semi_automated_tests/**/*:E501
+    test_collections/matter/python_tests/**/*:E501
     alembic/versions/**/*:E128,W293,F401

.github/workflows/spell-check.yml

@@ -1,6 +1,9 @@
 name: "Check spelling"
 on: # rebuild any PRs and main branch changes
-  pull_request_target:
+  # pull_request (not pull_request_target) so the job checks out and scans the
+  # PR content; with pull_request_target the default checkout is the base
+  # branch, so PR runs were scanning main instead of the PR
+  pull_request:
     types: [opened, synchronize, reopened]
   push:
     branches:

cspell.json

@@ -117,7 +117,12 @@
         "PAVST",
         "WEBRTCR",
         "ZONEMGMT",
-        "APPDEVTYPEID"
+        "APPDEVTYPEID",
+        "astext",
+        "asname",
+        "TLSCERT",
+        "JFADMIN",
+        "AABBCCDD"
     ],
     "allowCompoundWords": true,
     "ignorePaths": [