Bump org.assertj:assertj-core from 3.25.3 to 3.26.0 in /devtools/gradle #2804

Job	Run time
CI Sanity Check	31s
Initial JDK 17 Build	16m 48s
Attach pull request number	5s
Calculate Test Jobs	13s
Gradle Tests - JDK 17	28m 54s
JVM Tests - JDK 17	7m 47s
Gradle Tests - JDK 17 Windows	50m 46s
JVM Tests - JDK 21	10m 18s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	10m 52s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK 17	6m 8s
Native Tests - Misc4	17m 26s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Build report	37s
	2h 30m 25s

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