[Tuning] event.action and event.type change (#3495)

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

Removed changes from:
- rules/linux/discovery_process_capabilities.toml
- rules/linux/privilege_escalation_enlightenment_window_manager.toml
- rules/linux/privilege_escalation_gdb_sys_ptrace_elevation.toml
- rules/linux/privilege_escalation_gdb_sys_ptrace_netcon.toml
- rules/linux/privilege_escalation_suspicious_chown_fowner_elevation.toml
- rules/linux/privilege_escalation_suspicious_uid_guid_elevation.toml
- rules_building_block/discovery_capnetraw_capability.toml
- rules_building_block/persistence_cap_sys_admin_added_to_new_binary.toml

(selectively cherry picked from commit 9f8638a004)

rules/linux/execution_remote_code_execution_via_postgresql.toml

@@ -4,7 +4,7 @@ integration = ["endpoint"]
 maturity = "production"
 min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 min_stack_version = "8.3.0"
-updated_date = "2023/11/02"
+updated_date = "2024/03/08"
 
 [rule]
 author = ["Elastic"]
@@ -59,8 +59,8 @@ timestamp_override = "event.ingested"
 type = "eql"
 
 query = '''
-process where host.os.type == "linux" and event.action in ("exec", "exec_event", "fork", "fork_event") and 
-event.type == "start" and user.name == "postgres" and (
+process where host.os.type == "linux" and event.type == "start" and event.action in ("exec", "exec_event", "fork", "fork_event") and 
+user.name == "postgres" and (
   (process.parent.args : "*sh" and process.parent.args : "echo*") or 
   (process.args : "*sh" and process.args : "echo*")
 ) and not process.parent.name : "puppet"