Update arrow-cpp from 20.0.0 to 21.0.0

Author: emscripten-forge-bot

recipes/recipes_emscripten/arrow-cpp/recipe.yaml

@@ -1,16 +1,16 @@
 context:
-  version: 20.0.0
+  version: 21.0.0
 
 package:
   name: arrow-cpp
   version: ${{ version }}
 
 source:
 - url: https://github.com/apache/arrow/releases/download/apache-arrow-${{version}}/apache-arrow-${{version}}.tar.gz
-  sha256: 89efbbf852f5a1f79e9c99ab4c217e2eb7f991837c005cba2d4a2fbd35fad212
+  sha256: 5d3f8db7e72fb9f65f4785b7a1634522e8d8e9657a445af53d4a34a3849857b5
 
 build:
-  number: 1
+  number: 0
 
 requirements:
   build:
@@ -27,15 +27,15 @@ requirements:
 
 
 tests:
-  - package_contents:
-      lib:
-      - libarrow.a
-      - libarrow_acero.a
-      - libarrow_bundled_dependencies.a
-      - libarrow_dataset.a
-      include:
-      - arrow/array.h
-    
+- package_contents:
+    lib:
+    - libarrow.a
+    - libarrow_acero.a
+    - libarrow_bundled_dependencies.a
+    - libarrow_dataset.a
+    include:
+    - arrow/array.h
+
 about:
   license: Apache-2.0
   summary: 'Arrow: A cross-language development platform for in-memory analytics'