Fixed tests after a version bump

refs https://github.com/TryGhost/Toolbox/issues/348
refs 2033456

- Tests should've been updated for admin-api-sdk package too!

Author: naz

packages/admin-api/test/lib/admin-api.test.js

@@ -9,7 +9,7 @@ const packageVersion = packageJSON.version;
 
 describe('GhostAdminAPI general', function () {
     const config = {
-        version: 'v4',
+        version: 'v5',
         url: `http://ghost.local`,
         key: '5c73def7a21ad85eda5d4faa:d9a3e5b2d6c2a4afb094655c4dc543220be60b3561fa9622e3891213cb4357d0'
     };
@@ -239,7 +239,7 @@ describe('GhostAdminAPI general', function () {
             await api.config.read();
 
             makeRequestStub.calledOnce.should.be.true();
-            should.equal(makeRequestStub.args[0][0].headers['Accept-Version'], 'v4.0');
+            should.equal(makeRequestStub.args[0][0].headers['Accept-Version'], 'v5.0');
             should.equal(makeRequestStub.args[0][0].headers['User-Agent'], `GhostAdminSDK/${packageVersion}`);
             should.equal(generateTokenSpy.args[0][0], '5c73def7a21ad85eda5d4faa:d9a3e5b2d6c2a4afb094655c4dc543220be60b3561fa9622e3891213cb4357d0');
             should.equal(generateTokenSpy.args[0][1], '/canary/admin/');
@@ -285,7 +285,7 @@ describe('GhostAdminAPI general', function () {
             await api.config.read();
 
             makeRequestStub.calledOnce.should.be.true();
-            should.equal(makeRequestStub.args[0][0].headers['Accept-Version'], 'v4.0');
+            should.equal(makeRequestStub.args[0][0].headers['Accept-Version'], 'v5.0');
             should.equal(makeRequestStub.args[0][0].headers['User-Agent'], `GhostAdminSDK/${packageVersion}`);
             should.equal(generateTokenSpy.args[0][0], '5c73def7a21ad85eda5d4faa:d9a3e5b2d6c2a4afb094655c4dc543220be60b3561fa9622e3891213cb4357d0');
             should.equal(generateTokenSpy.args[0][1], '/admin/');