Add 5.5.3 to versionenum (#3133)

hapi-fhir-base/src/main/java/ca/uhn/fhir/util/VersionEnum.java

@@ -77,6 +77,7 @@ public enum VersionEnum {
 	V5_5_0,
 	V5_5_1,
 	V5_5_2,
+	V5_5_3,
 	V5_6_0
 
 	;

hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_5_3/version.yaml

@@ -0,0 +1,3 @@
+---
+release-date: "2021-10-29"
+codename: "Quasar"

hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3088-chained-search-contained-reference.yaml

@@ -1,6 +1,7 @@
 ---
 type: add
 issue: 3088
+backport: 5.5.3
 jira: SMILE-3151
 title: "Previously, chained searches were not able to traverse reference fields within contained resources.
 This enhancement adds the ability to traverse the reference fields of contained resources when those fields refer to discrete resources."

hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3100-chained-search-multi-contained-resource.yaml

@@ -1,6 +1,7 @@
 ---
 type: add
 issue: 3100
+backport: 5.5.3
 jira: SMILE-3151
 title: "Previously, only contained resources that are referenced directly by the containing resource were being indexed.
 This enhancement indexes the fields of contained resources that are referenced by other contained resources and

hapi-fhir-docs/src/main/resources/ca/uhn/hapi/fhir/changelog/5_6_0/3106-chained-search-multi-contained-resource-to-outbound-ref.yaml

@@ -1,5 +1,6 @@
 ---
 type: add
 issue: 3106
+backport: 5.5.3
 jira: SMILE-3151
 title: "Further enhances the features added by issue 3100 to allow chained searches across any combination of discrete and contained references."