[ML] Update DFA rest spec to reflect beta stability (#63990)

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.delete_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/delete-dfanalytics.html",
       "description":"Deletes an existing data frame analytics job."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.delete_trained_model.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/delete-trained-models.html",
       "description":"Deletes an existing trained inference model that is currently not referenced by an ingest pipeline."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.evaluate_data_frame.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/evaluate-dfanalytics.html",
       "description":"Evaluates the data frame analytics for an annotated index."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.explain_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"http://www.elastic.co/guide/en/elasticsearch/reference/current/explain-dfanalytics.html",
       "description":"Explains a data frame analytics config."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.get_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/get-dfanalytics.html",
       "description":"Retrieves configuration information for data frame analytics jobs."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.get_data_frame_analytics_stats.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/get-dfanalytics-stats.html",
       "description":"Retrieves usage information for data frame analytics jobs."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.get_trained_models.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/get-trained-models.html",
       "description":"Retrieves configuration information for a trained inference model."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.get_trained_models_stats.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/get-trained-models-stats.html",
       "description":"Retrieves usage information for trained inference models."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.put_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/put-dfanalytics.html",
       "description":"Instantiates a data frame analytics job."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.put_trained_model.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/put-trained-models.html",
       "description":"Creates an inference trained model."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.start_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/start-dfanalytics.html",
       "description":"Starts a data frame analytics job."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.stop_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/stop-dfanalytics.html",
       "description":"Stops one or more data frame analytics jobs."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {

x-pack/plugin/src/test/resources/rest-api-spec/api/ml.update_data_frame_analytics.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/current/update-dfanalytics.html",
       "description":"Updates certain properties of a data frame analytics job."
     },
-    "stability":"experimental",
+    "stability":"beta",
     "url":{
       "paths":[
         {