Update prisma monorepo to v7

Author: renovate[bot]

packages/core/package.json

@@ -245,10 +245,10 @@
     "@keystar/ui": "^0.7.21",
     "@nodelib/fs.walk": "^3.0.0",
     "@opentelemetry/api": "^1.9.0",
-    "@prisma/client": "6.19.3",
-    "@prisma/client-generator-registry": "^6.16.1",
-    "@prisma/internals": "6.19.3",
-    "@prisma/migrate": "6.19.3",
+    "@prisma/client": "7.8.0",
+    "@prisma/client-generator-registry": "^7.0.0",
+    "@prisma/internals": "7.8.0",
+    "@prisma/migrate": "7.8.0",
     "@react-aria/i18n": "^3.12.1",
     "@react-aria/label": "^3.7.10",
     "@react-aria/utils": "^3.25.1",
@@ -279,7 +279,7 @@
     "meow": "^9.0.0",
     "next": "^15.5.12",
     "pluralize": "^8.0.0",
-    "prisma": "6.19.3",
+    "prisma": "7.8.0",
     "prompts": "^2.4.2",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",