Update dependency com.google.cloud:libraries-bom to v26.88.0

Author: renovate-bot

spanner-tools/spanner_cdc_loadtest/pom.xml

@@ -34,7 +34,7 @@
             <dependency>
                 <groupId>com.google.cloud</groupId>
                 <artifactId>libraries-bom</artifactId>
-                <version>26.32.0</version>
+                <version>26.88.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>

spanner-tools/spanner_quicksink/pom.xml

@@ -20,7 +20,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.50.0</version>
+        <version>26.88.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

spannergeo-s2/pom.xml

@@ -41,7 +41,7 @@
             <dependency>
                 <groupId>com.google.cloud</groupId>
                 <artifactId>libraries-bom</artifactId>
-                <version>26.51.0</version>
+                <version>26.88.0</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>