Update api-generator prebuilt

Source: tools/base @ a6be2dff004d4759e2d0fa4e34d0b78f2960294e (studio-master-dev)

Change-Id: I4b0ad30c193c4bfc344ee65129bca32d9cbf8d41
diff --git a/common/api-generator/api-generator-22.9.4.jar b/common/api-generator/api-generator-22.9.4.jar
new file mode 100644
index 0000000..a4fd09f
--- /dev/null
+++ b/common/api-generator/api-generator-22.9.4.jar
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