Revert ".github: dependabot: Ignore pydantic-core"

This reverts commit ee1fed7.

With dependabot ignoring pydantic-core there's also the issue with
pip-compile locking a particular version of pydantic-core in the
requirements.txt file which will, again, prevent dependabot from
updating pydantic anyway, worse even, any dependency unless pip-compile
is run manually to refresh the pydantic-core version and force pushed
into dependabot's branch to pass CI.

Revert the commit in question and look for a different approach.

Signed-off-by: Erik Skultety <[email protected]>

.github/dependabot.yml

@@ -24,8 +24,15 @@ updates:
         update-types:
           - "minor"
           - "patch"
-    ignore:
-      # pydantic is designed to be used with a single version of pydantic-core [1] which follows a
-      # different release cycle and is our nr.1 violator of version updates blocking other
-      # dependency version updates to be accepted
-      - dependency-name: "pydantic-core"
+        exclude-patterns:
+          - "pydantic*"
+
+      # pydantic is a known violator of version updates where they don't release the core backend
+      # with the API library at the same time which holds up other legitimate updates, so group
+      # pydantic deps together
+      pydantic:
+        update-types:
+          - "minor"
+          - "patch"
+        patterns:
+          - "pydantic*"