Fixes rule group addition in IoaRuleGroup._update_create_delete

[hur]

Fixes rule group addition in IoaRuleGroup._update_create_delete

• Enhancement
• Major feature update
• Bug fixes
• Breaking change
• Updated unit tests
• Documentation

Bandit analysis

(caracara-py3.11) redacted@redacted tests % bandit -r . -s B101
[main]	INFO	Found project level .bandit file: ./.bandit
[utils]	WARNING	Unable to parse config file ./.bandit or missing [bandit] section
[main]	INFO	profile include tests: None
[main]	INFO	profile exclude tests: None
[main]	INFO	cli include tests: None
[main]	INFO	cli exclude tests: B101
[main]	INFO	running on Python 3.11.9
Run started:2024-10-25 11:47:03.460315

Test results:
	No issues identified.

Code scanned:
	Total lines of code: 1586
	Total lines skipped (#nosec): 0

Run metrics:
	Total issues (by severity):
		Undefined: 0
		Low: 0
		Medium: 0
		High: 0
	Total issues (by confidence):
		Undefined: 0
		Low: 0
		Medium: 0
		High: 0
Files skipped (0):

Added features and functionality

Issues resolved

• Fixes a bug in rule creation for an IoaRuleGroup which results in newly created rules not being returned back after updating a rule group

Other

• Added a unit test to cover this case. Unfortunately required a fair bit of code duplication with the way to tests are structured right now.

[hur]

Missed my initial testing for #216 since new_rule existed within the scope and thus worked for the case where only one rule was added, but broke when multiple rules were added.