Fix pod spec for non New arch

[billnbell]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch react-native-blob-util@0.18.5 for the project I'm working on.

Here is the diff that solved my problem:

diff --git a/node_modules/react-native-blob-util/react-native-blob-util.podspec b/node_modules/react-native-blob-util/react-native-blob-util.podspec
index 4aa0c11..bf8e901 100644
--- a/node_modules/react-native-blob-util/react-native-blob-util.podspec
+++ b/node_modules/react-native-blob-util/react-native-blob-util.podspec
@@ -18,6 +18,8 @@ Pod::Spec.new do |s|
 
   if fabric_enabled
     install_modules_dependencies(s)
+  else
+    s.dependency 'React-Core'
   end
 
 end

This issue body was partially generated by patch-package.

[claudiozam]

@billnbell thanks!

[RonRadtke]

Thank you very much!
Patch incoming.