deps: install ehttp loader

Signed-off-by: William Casarin <jb55@jb55.com>

Cargo.lock

@@ -928,6 +928,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "011213c1c95821080d1ea7a28cb2928f89df4d794a4c5f0ed034958966c58860"
 dependencies = [
  "egui 0.26.1",
+ "ehttp 0.4.0",
  "enum-map",
  "image",
  "log",
@@ -967,6 +968,20 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "ehttp"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e598cc2bfc28612f26426259ed99a978270e9433d63ae6d2843e30fb0974cd02"
+dependencies = [
+ "document-features",
+ "js-sys",
+ "ureq",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "either"
 version = "1.9.0"
@@ -2097,7 +2112,7 @@ dependencies = [
  "eframe",
  "egui 0.26.1",
  "egui_extras",
- "ehttp",
+ "ehttp 0.2.0",
  "enostr",
  "env_logger 0.10.2",
  "image",