Update to latest ewebsock and re_mp4 (#8069)

### What
Update crates to get ready for 0.20 release

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)

Cargo.lock

@@ -2334,8 +2334,9 @@ dependencies = [
 
 [[package]]
 name = "ewebsock"
-version = "0.7.0"
-source = "git+https://github.com/rerun-io/ewebsock?rev=ac6552ecb70f058d81dd8fafaecd4b1daba24685#ac6552ecb70f058d81dd8fafaecd4b1daba24685"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "679247b4a005c82218a5f13b713239b0b6d484ec25347a719f5b7066152a748a"
 dependencies = [
  "document-features",
  "js-sys",
@@ -5822,12 +5823,12 @@ dependencies = [
 
 [[package]]
 name = "re_mp4"
-version = "0.1.0"
-source = "git+https://github.com/rerun-io/re_mp4?rev=7d38361ee5b05f5a2b83a8029057c8a24d2e9023#7d38361ee5b05f5a2b83a8029057c8a24d2e9023"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1484620793c2ee3ba705a8c29d3991aa49484c579474de26050d272ec5307b14"
 dependencies = [
  "byteorder",
  "bytes",
- "log",
  "num-rational",
  "serde",
  "serde_json",

Cargo.toml

@@ -107,7 +107,7 @@ re_viewport_blueprint = { path = "crates/viewer/re_viewport_blueprint", version
 re_web_viewer_server = { path = "crates/viewer/re_web_viewer_server", version = "=0.20.0-alpha.1", default-features = false }
 
 # Rerun crates in other repos:
-ewebsock = "0.7.0"
+ewebsock = "0.8.0"
 re_math = "0.20.0"
 
 # If this package fails to build, install `nasm` locally, or build through `pixi`.
@@ -206,7 +206,7 @@ memory-stats = "1.1"
 mimalloc = "0.1.43"
 mime_guess2 = "2.0" # infer MIME type by file extension, and map mime to file extension
 mint = "0.5.9"
-re_mp4 = "0.1.0"
+re_mp4 = "0.2.0"
 natord = "1.0.9"
 ndarray = "0.16"
 ndarray-rand = "0.15"
@@ -579,9 +579,3 @@ significant_drop_tightening = "allow" # An update of parking_lot made this trigg
 # re_arrow2 = { git = "https://github.com/rerun-io/re_arrow2", rev = "e4717d6debc6d4474ec10db8f629f823f57bad07" }
 
 # dav1d = { path = "/home/cmc/dev/rerun-io/rav1d", package = "re_rav1d", version = "0.1.1" }
-
-# Commit on `main` branch of `re_mp4`
-re_mp4 = { git = "https://github.com/rerun-io/re_mp4", rev = "7d38361ee5b05f5a2b83a8029057c8a24d2e9023" }
-
-# Commit on `main` branch of `ewebsock`
-ewebsock = { git = "https://github.com/rerun-io/ewebsock", rev = "ac6552ecb70f058d81dd8fafaecd4b1daba24685" }