[test] Update a couple of crasher signatures

Author: hamishknight

validation-test/IDE/crashers/e8698acd627edfb.swift

@@ -1,3 +1,3 @@
-// {"kind":"complete","original":"bae855bf","signature":"swift::GenericSignatureRequest::diagnoseCycle(swift::DiagnosticEngine&) const","signatureAssert":"Assertion failed: (!ActiveDiagnostic && \"Already have an active diagnostic\"), function diagnose"}
+// {"kind":"complete","original":"bae855bf","signature":"swift::GenericTypeParamDecl::getSourceRange() const","signatureAssert":"Assertion failed: (Start.isValid() == End.isValid() && \"Start and end should either both be valid or both be invalid!\"), function SourceRange"}
 // RUN: not --crash %target-swift-ide-test -code-completion -batch-code-completion -skip-filecheck -code-completion-diagnostics -source-filename %s
 class a<b: c, b extension a where b #^^#

validation-test/compiler_crashers_2/a8c84d1122922f83.swift

@@ -1,4 +1,4 @@
-// {"kind":"typecheck","original":"bee4b7dd","signature":"swift::constraints::ContextualFailure::tryProtocolConformanceFixIt(swift::InFlightDiagnostic&) const","signatureAssert":"Assertion failed: (!missingProtoTypeStrings.empty() && \"type already conforms to all the protocols?\"), function tryProtocolConformanceFixIt"}
+// {"kind":"typecheck","original":"bee4b7dd","signature":"swift::constraints::ContextualFailure::tryProtocolConformanceFixIt() const","signatureAssert":"Assertion failed: (!missingProtoTypeStrings.empty() && \"type already conforms to all the protocols?\"), function tryProtocolConformanceFixIt"}
 // RUN: not --crash %target-swift-frontend -typecheck %s
 protocol a<b, c> {
   associatedtype b