build: add babel-jest to peerDependencies (#2751)

Closes #2749

Author: brandonchinn178

package.json

@@ -69,7 +69,17 @@
   },
   "peerDependencies": {
     "jest": "^27.0.0",
-    "typescript": ">=3.8 <5.0"
+    "typescript": ">=3.8 <5.0",
+    "babel-jest": ">=27.0.0 <28",
+    "@babel/core": ">=7.0.0-beta.0 <8"
+  },
+  "peerDependenciesMeta": {
+    "babel-jest": {
+      "optional": true
+    },
+    "@babel/core": {
+      "optional": true
+    }
   },
   "husky": {
     "hooks": {

src/utils/version-checkers.ts

@@ -8,6 +8,8 @@ const logger = rootLogger.child({ namespace: 'versions' })
 
 /**
  * @internal
+ *
+ * Don't forget to update peerDependencies in package.json when changing these.
  */
 const enum ExpectedVersions {
   Jest = '>=27.0.0 <28',