dependabot maven(deps-dev): bump slf4j-simple from 2.0.0 to 2.0.3

Bumps slf4j-simple from 2.0.0 to 2.0.3.

Commits

• b2cb05f prepare release 2.0.3
• 4b5bb41 fix SLF4J-546, Fluent logging API doesn't populate timestamp with Reload4JLogger
• b500a6f javadoc explaining using multiple markers instead of nested markers
• d81affb comment about ThreadLocal key or value types
• bcbbe40 Reword Marker Javadoc to improve grammar.
• 7686020 Merge pull request #310 from ascopes/patch-1
• 3f47f87 Add missing javadoc to SLF4JServiceProvider.java
• eb1710a start work on 2.0.3-SNAPSHOT, fix SLF4J-564
• bb49a5a Merge pull request #307 from radio-rogal/slf4j-564-simple-logger-javadoc
• 768ca7d [SLF4J-564] slf4j-simple: fix javadoc for SimpleLogger
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