Bump org.assertj:assertj-core from 3.26.0 to 3.26.3 in /devtools/gradle #2877

Job	Run time
Attach pull request number	4s
CI Sanity Check	31s
Initial JDK 17 Build	14m 3s
Calculate Test Jobs	11s
Gradle Tests - JDK 17	29m 41s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Gradle Tests - JDK 17 Windows	49m 49s
JVM Tests - JDK 17	7m 39s
JVM Tests - JDK 21	8m 26s
Maven Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	11m 44s
Quickstarts Compilation - JDK 17	6m 12s
Native Tests - Misc4	17m 49s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Upload build stats to collector	0s
Build report	28s
	2h 26m 37s

Provide feedback