[test] amend api digester exceptions

Author: glessard

Diff for: test/api-digester/Outputs/stability-stdlib-source-base.swift.expected

@@ -363,6 +363,8 @@ Func ContiguousArray.withUnsafeMutableBufferPointer(_:) is now without rethrows
 
 // Adoption of @_addressableForDependencies
 Struct CollectionOfOne is now with @_addressableForDependencies
+Struct String.UTF8View is now with @_addressableForDependencies
+Struct Substring.UTF8View is now with @_addressableForDependencies
 
 Protocol CodingKey has added inherited protocol SendableMetatype
 Protocol Error has added inherited protocol SendableMetatype

Diff for: test/api-digester/stability-stdlib-abi-without-asserts.test

@@ -825,6 +825,8 @@ Func _SliceBuffer.withUnsafeMutableBufferPointer(_:) has mangled name changing f
 Struct String.Index has added a conformance to an existing protocol CustomDebugStringConvertible
 
 Struct CollectionOfOne is now with @_addressableForDependencies
+Struct String.UTF8View is now with @_addressableForDependencies
+Struct Substring.UTF8View is now with @_addressableForDependencies
 
 Enum _SwiftifyInfo is a new API without @available attribute
 Enum _SwiftifyExpr is a new API without @available attribute