Run the manual tests in continuous-release in the same way as in continuous.sh.

PiperOrigin-RevId: 311720564
(cherry picked from commit c04d775b816cab0eb559496be963afa54430f0ca)
diff --git a/kokoro/continuous-release.sh b/kokoro/continuous-release.sh
index 1838f91..392643d 100755
--- a/kokoro/continuous-release.sh
+++ b/kokoro/continuous-release.sh
@@ -27,9 +27,12 @@
 source ./kokoro/run_tests.sh
 
 # Run all manual tests.
-time bazel test \
-  --strategy=TestRunner=standalone \
-  --test_timeout 10000 \
-  --test_output=all \
-  //src/test:java/com/google/crypto/tink/subtle/AesGcmJceTest \
-  //src/test:java/com/google/crypto/tink/subtle/AesGcmHkdfStreamingTest
+(
+  cd java_src
+  time bazel test \
+    --strategy=TestRunner=standalone \
+    --test_timeout 10000 \
+    --test_output=all \
+    //src/test:java/com/google/crypto/tink/subtle/AesGcmJceTest \
+    //src/test:java/com/google/crypto/tink/subtle/AesGcmHkdfStreamingTest
+)