Update breakage tests to run against v2.0.1 (#1269)

Update the breakage tests to run against v2.0.1. This keeps the breakage
tests up-to-date and allows for unskipping all tests that either fixed
bugs observable by the breakage tests or were for previously unreleased
APIs.

.github/labeler.yml

@@ -36,6 +36,7 @@ meta:
   - .shellcheckrc
 
 test:
+  - test/breakage/**
   - test/compat/**
   - test/e2e/**
   - test/fixtures/**

package.json

@@ -79,7 +79,7 @@
     "prettier": "3.0.3",
     "publint": "0.2.4",
     "rollup": "4.1.4",
-    "shescape-previous": "npm:[email protected].0",
+    "shescape-previous": "npm:[email protected].1",
     "sinon": "17.0.0"
   },
   "scripts": {

test/breakage/testing.test.js

@@ -9,7 +9,10 @@ import * as fc from "fast-check";
 import { arbitrary } from "./_.js";
 
 import { Shescape as Stubscape, Throwscape } from "shescape/testing";
-import { Shescape as Previoustub } from "shescape-previous/testing";
+import {
+  Shescape as Previoustub,
+  Throwscape as Previousthrow,
+} from "shescape-previous/testing";
 
 testProp(
   "Stubscape#constructor",
@@ -91,9 +94,7 @@ testProp(
   },
 );
 
-// TODO: unskip upon release 2.0.1/2.1.0. It's currently skipped because the
-// implementation was incorrect in 2.0.0 and has been fixed since (in 4f03fd8).
-testProp.skip(
+testProp(
   "Stubscape#quote",
   [arbitrary.shescapeOptions(), fc.anything()],
   (t, options, arg) => {
@@ -120,9 +121,7 @@ testProp.skip(
   },
 );
 
-// TODO: unskip upon release 2.0.1/2.1.0. It's currently skipped because the
-// implementation was incorrect in 2.0.0 and has been fixed since (in 4f03fd8).
-testProp.skip(
+testProp(
   "Stubscape#quoteAll",
   [
     arbitrary.shescapeOptions(),
@@ -152,9 +151,7 @@ testProp.skip(
   },
 );
 
-// TODO: unskip upon release 2.0.1/2.1.0. It's currently skipped because the
-// `Throwscape` class was not yet release in 2.0.0 (added in 4f03fd8).
-testProp.skip(
+testProp(
   "Throwscape#constructor",
   [arbitrary.shescapeOptions()],
   (t, options) => {