Upgrade nbformat and runtimelib (#20050)

Fixes an issue on load of notebooks that have `text/*` output in
`Vec<String>` rather than `String`. This ensures that Markdown output
will render correctly.

<img width="1306" alt="image"
src="https://github.com/user-attachments/assets/0bcc7dc8-527f-4067-a916-3ae569ea197d">


Release Notes:

- N/A

Cargo.toml

@@ -370,7 +370,7 @@ linkify = "0.10.0"
 log = { version = "0.4.16", features = ["kv_unstable_serde", "serde"] }
 markup5ever_rcdom = "0.3.0"
 nanoid = "0.4"
-nbformat = "0.3.1"
+nbformat = "0.3.2"
 nix = "0.29"
 num-format = "0.4.4"
 once_cell = "1.19.0"
@@ -403,7 +403,7 @@ reqwest = { git = "https://github.com/zed-industries/reqwest.git", rev = "fd110f
     "stream",
 ] }
 rsa = "0.9.6"
-runtimelib = { version = "0.16.0", default-features = false, features = [
+runtimelib = { version = "0.16.1", default-features = false, features = [
     "async-dispatcher-runtime",
 ] }
 rustc-demangle = "0.1.23"