Update emscripten

Author: simolus3

.github/workflows/wasm.yml

@@ -8,7 +8,7 @@ jobs:
     if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
 
@@ -21,7 +21,7 @@ jobs:
       - name: Setup emsdk
         uses: mymindstorm/setup-emsdk@v14
         with:
-          version: 3.1.68
+          version: 4.0.7
 
       - name: Build WASM
         run: ./tool/build_wasm.sh

crates/core/src/bson/parser.rs

@@ -41,8 +41,12 @@ impl<'de> Parser<'de> {
     }
 
     fn advance_byte(&mut self) -> Result<u8, BsonError> {
-        let slice = self.advance_checked(1)?;
-        Ok(slice[0])
+        let value = *self
+            .remaining_input
+            .split_off_first()
+            .ok_or_else(|| self.error(ErrorKind::UnexpectedEoF))?;
+
+        Ok(value)
     }
 
     pub fn read_cstr(&mut self) -> Result<&'de str, BsonError> {