fix: release scripts from issuing overlapping phases

.kokoro/build.sh

@@ -37,7 +37,7 @@ retry_with_backoff 3 10 \
     -Dgcloud.download.skip=true \
     -T 1C
 
-# if GOOGLE_APPLICATION_CREDIENTIALS is specified as a relative path prepend Kokoro root directory onto it
+# if GOOGLE_APPLICATION_CREDENTIALS is specified as a relative path, prepend Kokoro root directory onto it
 if [[ ! -z "${GOOGLE_APPLICATION_CREDENTIALS}" && "${GOOGLE_APPLICATION_CREDENTIALS}" != /* ]]; then
     export GOOGLE_APPLICATION_CREDENTIALS=$(realpath ${KOKORO_GFILE_DIR}/${GOOGLE_APPLICATION_CREDENTIALS})
 fi

.kokoro/release/snapshot.sh

@@ -25,7 +25,7 @@ grep SNAPSHOT versions.txt
 setup_environment_secrets
 create_settings_xml_file "settings.xml"
 
-mvn clean install deploy -B \
+mvn clean deploy -B \
   --settings ${MAVEN_SETTINGS_FILE} \
   -DperformRelease=true \
   -Dgpg.executable=gpg \

.kokoro/release/stage.sh

@@ -29,7 +29,7 @@ create_settings_xml_file "settings.xml"
 
 # attempt to stage 3 times with exponential backoff (starting with 10 seconds)
 retry_with_backoff 3 10 \
-  mvn clean install deploy -B \
+  mvn clean deploy -B \
     --settings ${MAVEN_SETTINGS_FILE} \
     -DskipTests=true \
     -DperformRelease=true \

synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-shared-dependencies.git",
-        "sha": "265911945d03215a4a2f36e350f94ba60a25c59b"
+        "sha": "409d24f8a0cac30e41ca45eb2711aecb335d70dd"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "5b0e1592dd7d70b485e157ea4b3eb1704ecbd015"
+        "sha": "8285c2b4cdbc3771d031ad91e1c4ec9e55fff45d"
       }
     }
   ],
@@ -25,6 +25,7 @@
     ".github/generated-files-bot.yml",
     ".github/readme/synth.py",
     ".github/snippet-bot.yml",
+    ".github/sync-repo-settings.yaml",
     ".github/trusted-contribution.yml",
     ".github/workflows/approve-readme.yaml",
     ".github/workflows/ci.yaml",