Bump spring-boot from 3.5.14 to 3.5.15 and drop redundant postgresql and tomcat version overrides now provided by the BOM

pom.xml

@@ -62,15 +62,13 @@
         <pkg.implementationTitle>${project.name}</pkg.implementationTitle>
         <pkg.unixLogFolder>/var/log/${pkg.name}</pkg.unixLogFolder>
         <pkg.installFolder>/usr/share/${pkg.name}</pkg.installFolder>
-        <spring-boot.version>3.5.14</spring-boot.version>
+        <spring-boot.version>3.5.15</spring-boot.version>
         <!-- TODO: remove spring-boot-test.version override and the matching dependencyManagement entries below
              once Spring Boot 3.5.15+ is released with a fix for the ImportsContextCustomizer regression in 3.5.14
              that causes "Duplicate spy definition" failures on legacy @SpyBean fields (see PR #15557). -->
         <spring-boot-test.version>3.5.13</spring-boot-test.version>
         <commons-lang3.version>3.18.0</commons-lang3.version> <!-- to fix CVE-2025-48924. TODO: remove when fixed in spring-boot-dependencies -->
-        <postgresql.version>42.7.11</postgresql.version> <!-- to fix CVE-2026-42198. TODO: remove when fixed in spring-boot-dependencies -->
         <netty.version>4.1.134.Final</netty.version> <!-- to fix CVE-2026-42579, CVE-2026-42583, CVE-2026-42584, CVE-2026-42587, and MQTT decoder regression introduced in 4.1.133 by the CVE-2026-44248 fix. TODO: remove when fixed in spring-boot-dependencies -->
-        <tomcat.version>10.1.55</tomcat.version> <!-- to fix CVE-2026-41284, CVE-2026-43512. TODO: remove when fixed in spring-boot-dependencies -->
         <javax.xml.bind-api.version>2.4.0-b180830.0359</javax.xml.bind-api.version>
         <jjwt.version>0.12.5</jjwt.version>
         <rat.version>0.10</rat.version> <!-- unused -->
@@ -1015,23 +1013,6 @@
                 <scope>import</scope>
             </dependency>
             <!-- End of netty-bom version override -->
-            <!-- Temporary tomcat-embed version override -->
-            <dependency>
-                <groupId>org.apache.tomcat.embed</groupId>
-                <artifactId>tomcat-embed-core</artifactId>
-                <version>${tomcat.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.tomcat.embed</groupId>
-                <artifactId>tomcat-embed-el</artifactId>
-                <version>${tomcat.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>org.apache.tomcat.embed</groupId>
-                <artifactId>tomcat-embed-websocket</artifactId>
-                <version>${tomcat.version}</version>
-            </dependency>
-            <!-- End of tomcat-embed version override -->
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
@@ -1369,11 +1350,6 @@
                 <artifactId>commons-lang3</artifactId>
                 <version>${commons-lang3.version}</version>
             </dependency>
-            <dependency>
-                <groupId>org.postgresql</groupId>
-                <artifactId>postgresql</artifactId>
-                <version>${postgresql.version}</version>
-            </dependency>
             <dependency>
                 <groupId>commons-io</groupId>
                 <artifactId>commons-io</artifactId>