fix(create-svelte): bump minimum required Svelte version (#1192)

Author: dummdidumm

Diff for: .changeset/nine-rats-heal.md

@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+bump minimum required Svelte version

Diff for: packages/create-svelte/templates/default/package.template.json

@@ -8,7 +8,7 @@
 	},
 	"devDependencies": {
 		"@sveltejs/kit": "workspace:*",
-		"svelte": "^3.29.0",
+		"svelte": "^3.34.0",
 		"vite": "^2.1.0"
 	},
 	"type": "module",

Diff for: packages/create-svelte/templates/skeleton/package.template.json

@@ -8,7 +8,7 @@
 	},
 	"devDependencies": {
 		"@sveltejs/kit": "workspace:*",
-		"svelte": "^3.29.0",
+		"svelte": "^3.34.0",
 		"vite": "^2.2.3"
 	},
 	"type": "module"