Move log sanitization to SIG Security

Author: ehashman

keps/sig-instrumentation/1753-logs-sanitization/README.md renamed to keps/sig-security/1753-logs-sanitization/README.md

@@ -4,7 +4,9 @@ authors:
   - "@44past4"
   - "@immutableT"
   - "@PurelyApplied"
-owning-sig: sig-instrumentation
+owning-sig: sig-security
+participating-sigs:
+  - sig-instrumentation
 status: implementable
 creation-date: 2020-05-07
 last-updated: 2020-10-14
@@ -15,4 +17,4 @@ approvers:
   - "@dashpole"
 prr-approvers:
   - "@wojtek-t"
-disable-supported: true
+disable-supported: true