chore: update Maven wrapper to version 3.3.4 in Spring Boot projects … #6

Job	Run time
Section 07: Collections (7 projects)	27s
Section 08: Exception Handling (7 projects)	23s
Section 06: Java OOP (18 projects)	45s
Section 05: Arrays (1 project)	21s
Section 04: Methods (1 project)	14s
Section 02: Conditionals (1 project)	10s
Section 03: Loops (1 project)	16s
Section 01: Java Fundamentals (2 projects)	13s
Section 14: Spring Boot MVC (2 projects)	29s
Section 09: Lambdas & Streams (7 projects)	24s
Section 10: Unit Testing (9 projects)	30s
Section 13: Spring Boot REST APIs (4 projects)	30s
Section 11: TDD (3 projects)	18s
Section 12: Spring Boot Quick Start (1 project)	23s
	5m 23s

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