[test] Update a couple of crasher signatures

Author: hamishknight

validation-test/compiler_crashers_2/2571144ba4dfcd.swift

@@ -1,4 +1,4 @@
-// {"kind":"typecheck","signature":"(anonymous namespace)::TypePrinter::printWithParensIfNotSimple(swift::Type)"}
+// {"kind":"typecheck","signature":"(anonymous namespace)::TypePrinter::printArchetypeCommon(swift::Type, swift::GenericEnvironment*)"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 protocol a: Collection where Element == b.Element! {
   associatedtype b: Collection

validation-test/compiler_crashers_2/275b15e1edc79b4f.swift

@@ -1,4 +1,4 @@
-// {"kind":"typecheck","signature":"swift::ProtocolConformanceRef::getTypeWitness(swift::AssociatedTypeDecl*, swift::SubstOptions) const"}
+// {"kind":"typecheck","signature":"(anonymous namespace)::TypeSubstituter::transformDependentMemberType(swift::DependentMemberType*, swift::TypePosition)"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 protocol a: Collection where Iterator == Self
   struct b<c: a>: IteratorProtocol {next -> c.Element? struct c: a {

validation-test/compiler_crashers_2/3b24e8bed8732c5c.swift

@@ -1,4 +1,4 @@
-// {"kind":"emit-ir","signature":"swift::irgen::FulfillmentMap::searchTypeMetadata(swift::irgen::IRGenModule&, swift::CanType, swift::irgen::IsExact_t, swift::MetadataState, unsigned int, swift::irgen::MetadataPath&&, swift::irgen::FulfillmentMap::InterestingKeysCallback const&)"}
+// {"kind":"emit-ir","signature":"swift::irgen::FulfillmentMap::searchNominalTypeMetadata(swift::irgen::IRGenModule&, swift::CanType, swift::MetadataState, unsigned int, swift::irgen::MetadataPath&&, swift::irgen::FulfillmentMap::InterestingKeysCallback const&)"}
 // RUN: not --crash %target-swift-frontend -emit-ir %s
 class a<b> {
 }

validation-test/compiler_crashers_2/e5dc6197d5ae06b.swift

@@ -1,4 +1,4 @@
-// {"kind":"typecheck","signature":"swift::Mangle::ASTMangler::appendRequirement(swift::Requirement const&, swift::GenericSignature, bool)"}
+// {"kind":"typecheck","signature":"swift::Mangle::ASTMangler::appendExistentialLayout(swift::ExistentialLayout const&, swift::GenericSignature, swift::ValueDecl const*)"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 protocol a {
   typealias b = Int

validation-test/compiler_crashers_2/f1419d3f3c2fe6b9.swift

@@ -1,4 +1,4 @@
-// {"kind":"typecheck","signature":"swift::Mangle::ASTMangler::appendProtocolName(swift::ProtocolDecl const*, bool)"}
+// {"kind":"typecheck","signature":"swift::Mangle::ASTMangler::appendExtension(swift::ExtensionDecl const*, swift::Mangle::ASTMangler::BaseEntitySignature&, llvm::StringRef)"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 extension Collection where Self : a {
   struct Index protocol a