Update scala environment_version and dbr_version (#5172)

## Changes
Sync cli code with changes in
databricks/bundle-examples#152

## Why
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## Tests
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---------

Co-authored-by: Andrew Nester <andrew.nester.dev@gmail.com>

Author: gkiko

acceptance/bundle/templates/default-scala/output/my_default_scala/resources/my_default_scala.job.yml

@@ -22,6 +22,6 @@ resources:
       environments:
         - environment_key: default
           spec:
-            environment_version: "4-scala-preview"
+            environment_version: "4"
             java_dependencies:
               - ${workspace.artifact_path}/.internal/my_default_scala-assembly-0.1.jar

libs/template/templates/default-scala/library/template_variables.tmpl

@@ -8,7 +8,7 @@
 {{- end }}
 
 {{ define `dbr_version` -}}
-    17.0
+    17.3
 {{- end }}
 
 {{ define `scala_major_minor_version` -}}

libs/template/templates/default-scala/template/{{.project_name}}/resources/{{.project_name}}.job.yml.tmpl

@@ -31,7 +31,7 @@ resources:
       environments:
         - environment_key: default
           spec:
-            environment_version: "4-scala-preview"
+            environment_version: "4"
             java_dependencies:
               - ${workspace.artifact_path}/.internal/{{.project_name}}-assembly-{{template `version` .}}.jar
 {{- else}}