Update default version of the stack to 8.13.2 (elastic#1783)

Update default version, and versions used in CI.

Author: jsoriano

Makefile

@@ -59,14 +59,14 @@ test-stack-command-oldest:
 	./scripts/test-stack-command.sh 7.14.2
 
 test-stack-command-7x:
-	./scripts/test-stack-command.sh 7.17.18
+	./scripts/test-stack-command.sh 7.17.19
 
 # Keeping a test for 8.6 because it has an specific configuration file.
 test-stack-command-86:
 	./scripts/test-stack-command.sh 8.6.2
 
 test-stack-command-8x:
-	./scripts/test-stack-command.sh 8.13.0-SNAPSHOT
+	./scripts/test-stack-command.sh 8.14.0-SNAPSHOT
 
 test-stack-command-with-apm-server:
 	APM_SERVER_ENABLED=true ./scripts/test-stack-command.sh

internal/install/stack_version.go

@@ -6,5 +6,5 @@ package install
 
 const (
 	// DefaultStackVersion is the default version of the stack
-	DefaultStackVersion = "8.12.2"
+	DefaultStackVersion = "8.13.2"
 )