fix: Add shopt -s nullglob to dependencies script (#331)

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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

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-grafeas.git",
- "sha": "1135609987044590b564a7fac0f45317f6127af0"
+ "sha": "1f3b0392993ca10800c03de014309b116f9f3753"
  }
  },
  {
@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "1c0c698705e668ccb3d68556ae7260f16ce63a6e"
+ "sha": "87254ac89a9559864c0a245d6b150406439ce3d8"
  }
  }
  ],