fix(fmt/jupyter): handle "source" property that's a string (#21361)

It was corrupting the file.

.dprint.json

@@ -56,7 +56,7 @@
     "ext/websocket/autobahn/reports"
   ],
   "plugins": [
-    "https://plugins.dprint.dev/typescript-0.88.5.wasm",
+    "https://plugins.dprint.dev/typescript-0.88.6.wasm",
     "https://plugins.dprint.dev/json-0.19.1.wasm",
     "https://plugins.dprint.dev/markdown-0.16.3.wasm",
     "https://plugins.dprint.dev/toml-0.5.4.wasm",

Cargo.lock

@@ -1943,9 +1943,9 @@ dependencies = [
 
 [[package]]
 name = "dprint-plugin-jupyter"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b65cf5dd43b15bf9dbb69a2d0e331106d6e3d33d8678d32385245993e8855c02"
+checksum = "75afc7a6b9e2b36976010eac441f3140ee642620c2c5b930873ccbf9d8510a59"
 dependencies = [
  "anyhow",
  "dprint-core",
@@ -1970,9 +1970,9 @@ dependencies = [
 
 [[package]]
 name = "dprint-plugin-typescript"
-version = "0.88.5"
+version = "0.88.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a4830d36624ef81389cebbefecffd437058d003698756760e4b6288b586e685"
+checksum = "bb7fe06e34987533797220544a8baea26bacbbbc1e81f41c7e654d2e68f41f72"
 dependencies = [
  "anyhow",
  "deno_ast",

cli/Cargo.toml

@@ -82,9 +82,9 @@ data-url.workspace = true
 dissimilar = "=1.0.4"
 dotenvy = "0.15.7"
 dprint-plugin-json = "=0.19.1"
-dprint-plugin-jupyter = "=0.1.1"
+dprint-plugin-jupyter = "=0.1.2"
 dprint-plugin-markdown = "=0.16.3"
-dprint-plugin-typescript = "=0.88.5"
+dprint-plugin-typescript = "=0.88.6"
 encoding_rs.workspace = true
 env_logger = "=0.10.0"
 fancy-regex = "=0.10.0"