Adapt test excepted stderr to take libcurl multipart boundary size change in 8.4.0+.

See https://github.com/curl/curl/pull/11838/files where `define MIME_RAND_BOUNDARY_CHARS` has been changed from 16 to 22.
The new pattern on 'Content-Lenght' works for previsous and newer libcurl version.

Cargo.lock

@@ -313,9 +313,9 @@ dependencies = [
 
 [[package]]
 name = "curl-sys"
-version = "0.4.67+curl-8.3.0"
+version = "0.4.68+curl-8.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cc35d066510b197a0f72de863736641539957628c8a42e70e27c66849e77c34"
+checksum = "b4a0d18d88360e374b16b2273c832b5e57258ffc1d4aa4f96b108e0738d5752f"
 dependencies = [
  "cc",
  "libc",

integration/tests_ok/very_verbose.err.pattern

@@ -264,7 +264,7 @@
 > Host: localhost:8000
 > Accept: */*
 > User-Agent: hurl/~~~
-> Content-Length: 26572
+> Content-Length: 265~~
 > Content-Type: multipart/form-data; boundary=~~~~~
 >
 * Request body:

packages/hurl/Cargo.toml

@@ -23,7 +23,7 @@ chrono = { version = "0.4.31", default-features = false, features = ["clock"] }
 clap = { version = "4.4.6", features = ["cargo", "string", "wrap_help"] }
 colored = "2.0.4"
 curl = "0.4.44"
-curl-sys = "0.4.67"
+curl-sys = "0.4.68"
 encoding = "0.2.33"
 float-cmp = "0.9.0"
 glob = "0.3.1"