fix: theme bump to resolve sass deprecations

Author: NathanWalker

apps/nativescript-starter-angular/package.json

@@ -14,7 +14,7 @@
     "@angular/router": "~18.0.0",
     "@nativescript/angular": "^18.0.0",
     "@nativescript/core": "~8.8.0",
-    "@nativescript/theme": "~3.0.2",
+    "@nativescript/theme": "^3.1.0",
     "rxjs": "~7.8.0",
     "zone.js": "~0.14.2"
   },

apps/nativescript-starter-javascript/package.json

@@ -5,7 +5,7 @@
   "private": true,
   "dependencies": {
     "@nativescript/core": "~8.8.0",
-    "@nativescript/theme": "~3.0.2"
+    "@nativescript/theme": "^3.1.0"
   },
   "devDependencies": {
     "@nativescript/preview-cli": "1.0.13",

apps/nativescript-starter-typescript/package.json

@@ -5,7 +5,7 @@
   "private": true,
   "dependencies": {
     "@nativescript/core": "~8.8.0",
-    "@nativescript/theme": "~3.0.2"
+    "@nativescript/theme": "^3.1.0"
   },
   "devDependencies": {
     "@nativescript/preview-cli": "1.0.13",