Update multiple Struts 2.5.x libraries / Maven build plugin versions

Hello Apache Struts Team.

This Jira is to track proposed introduction of newer (believed to be compatible) library versions for the Struts 2.5.x line, as well as newer (believed to be compatible) Maven build plugin versions for the build.  Modifications to some pom.xml build files will be all that is required.

As no code changes are involved, the risk should be pretty low and end-users could manually back-level any problematic jars if issues arise.  If any Maven build plugin version change presents an issue it can be easily reverted in the PR.

The proposed list of library version updates is:

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• cdi-api 1.0-SP4 -> 1.2
• weld-core 1.0.1-SP4 -> 2.2.16.SP1
• weld-se 1.0.1-Final -> weld-se-core 2.2.16.SP1
• slf4j-api 1.7.28 -> 1.7.30
• slf4j-simple 1.7.28 -> 1.7.30
• jackson 2.10.0 -> 2.10.3
• ognl 3.1.26 -> 3.1.28
• asm 7.1 -> 7.3.1
• spring 4.3.25.RELEASE -> 4.3.26.RELEASE
• freemarker 2.3.28 -> 2.3.30
• org.apache.felix.main 4.6.1 -> 6.0.3

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The proposed list of Maven plugin version updates is:

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• doxia-core 1.8 -> 1.9.1
• doxia-module-markdown 1.7 -> 1.9.1
• maven-project-info-reports-plugin 2.7 -> 3.0.0
• updateimpact-maven-plugin 1.0.10 -> 1.0.12
• maven-surefire-plugin 2.22.1 -> 3.0.0-M4
• maven-war-plugin 2.1 -> 3.2.3
• maven-dependency-plugin 2.10 -> 3.1.2
• dependency-check-maven 3.3.4 -> 5.3.2

Note: Unable to upgrade maven-bundle-plugin past 2.1.0 as it introduced OOM during JDK7 builds with default heap settings.

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A PR for this proposal should be available shortly for review.