chore: pin dependencies check mongodb-client-encryption test to install alpha (#3785)

Author: nbbeeken

test/action/dependency.test.ts

@@ -83,7 +83,11 @@ describe('package.json', function () {
       });
 
       context(`when ${depName} is installed`, () => {
-        beforeEach(async () => {
+        beforeEach(async function () {
+          if (depName === 'mongodb-client-encryption') {
+            execSync(`npm install --no-save "${depName}"@alpha`);
+            return;
+          }
           execSync(`npm install --no-save "${depName}"@"${depMajor}"`);
         });