chore(deps): update dependency com.google.cloud.samples:shared-configuration to v1.0.18 (#208)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| com.google.cloud.samples:shared-configuration | patch | `1.0.17` -> `1.0.18` |

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samples/install-without-bom/pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
-    <version>1.0.17</version>
+    <version>1.0.18</version>
   </parent>
 
   <properties>

samples/pom.xml

@@ -18,7 +18,7 @@
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
-    <version>1.0.17</version>
+    <version>1.0.18</version>
   </parent>
 
   <properties>

samples/snapshot/pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
-    <version>1.0.17</version>
+    <version>1.0.18</version>
   </parent>
 
   <properties>

samples/snippets/pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud.samples</groupId>
     <artifactId>shared-configuration</artifactId>
-    <version>1.0.17</version>
+    <version>1.0.18</version>
   </parent>
 
   <properties>