[ObjC] Updated Abseil to 1.20240722.0 (#38214)

#37543 updated abseil but not for swift, this PR update it for swift packages

Closes #38214

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/38214 from HannahShiSFB:update-abseil-for-swift 7620343cf1
PiperOrigin-RevId: 703175828

Package.swift

@@ -23,7 +23,7 @@ let package = Package(
   ],
 
   dependencies: [
-    .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20240116.1"..<"0.20240117.0"),
+    .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20240722.0"..<"0.20240723.0"),
     .package(url: "https://github.com/firebase/boringssl-SwiftPM.git", "0.32.0"..<"0.33.0"),
   ],
 

templates/Package.swift.template

@@ -25,7 +25,7 @@
       ],
     
       dependencies: [
-        .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20240116.1"..<"0.20240117.0"),
+        .package(url: "https://github.com/firebase/abseil-cpp-SwiftPM.git", "0.20240722.0"..<"0.20240723.0"),
         .package(url: "https://github.com/firebase/boringssl-SwiftPM.git", "0.32.0"..<"0.33.0"),
       ],