chore(repo): Add changeset

.changeset/silly-poems-tease.md

@@ -0,0 +1,25 @@
+---
+'@clerk/backend': major
+---
+
+Drop deprecated properties. Migration steps:
+- use `createClerkClient` instead of `__unstable_options`
+- use `publishableKey` instead of `frontendApi`
+- use `clockSkewInMs` instead of  `clockSkewInSeconds`
+- use `apiKey` instead of  `secretKey`
+- drop `httpOptions`
+- use `*.image` instead of
+    - `ExternalAccount.picture`
+    - `ExternalAccountJSON.avatar_url`
+    - `Organization.logoUrl`
+    - `OrganizationJSON.logo_url`
+    - `User.profileImageUrl`
+    - `UserJSON.profile_image_url`
+    - `OrganizationMembershipPublicUserData.profileImageUrl`
+    - `OrganizationMembershipPublicUserDataJSON.profile_image_url`
+- drop `pkgVersion`
+- use `Organization.getOrganizationInvitationList` with // TODO
+- drop `orgs` claim (if required, can be manually added by using `user.organizations` in a jwt template)
+
+Internal changes:
+- replaced error enum (and it's) `SetClerkSecretKeyOrAPIKey` with `SetClerkSecretKey`