fix: Add shopt -s nullglob to dependencies script (#440)

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Author: yoshi-automation

.kokoro/dependencies.sh

@@ -14,6 +14,7 @@
 # limitations under the License.
 
 set -eo pipefail
+shopt -s nullglob
 
 ## Get the directory of the build script
 scriptDir=$(realpath $(dirname "${BASH_SOURCE[0]}"))

synth.metadata

@@ -4,14 +4,14 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-dns.git",
- "sha": "00215cdb412af1e1d58012e3abb75e89ad803476"
+ "sha": "61712fd34146d93d700ced4590c79eb6ea2b512e"
  }
  },
  {
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "1c0c698705e668ccb3d68556ae7260f16ce63a6e"
+ "sha": "87254ac89a9559864c0a245d6b150406439ce3d8"
  }
  }
  ],