Bump actions/setup-java from 5.6.0 to 6.0.0

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 5.6.0 to 6.0.0.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](https://github.com/actions/setup-java/compare/v5.6.0...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/setup-java
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/auto-jdk-os-matrix.yml

diff --git a/.github/workflows/auto-jdk-os-matrix.yml b/.github/workflows/auto-jdk-os-matrix.yml
index ba8db79..f8b9107 100644
--- a/.github/workflows/auto-jdk-os-matrix.yml
+++ b/.github/workflows/auto-jdk-os-matrix.yml
@@ -25,7 +25,7 @@
         uses: actions/checkout@v7
 
       - name: Install Build JDKs for Subproject Toolchains
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
           java-version: |
             11

.github/workflows/javadoc.yml

diff --git a/.github/workflows/javadoc.yml b/.github/workflows/javadoc.yml
index f77c57a..8028169 100644
--- a/.github/workflows/javadoc.yml
+++ b/.github/workflows/javadoc.yml
@@ -31,7 +31,7 @@
           fetch-depth: 0
 
       - name: 2a. Provision JDK 11 Toolchain
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
          java-version: '11'
          distribution: 'temurin'
@@ -39,7 +39,7 @@
          architecture: x64
 
       - name: 2b. Provision JDK 17 Toolchain
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
           java-version: '17'
           distribution: 'temurin'
@@ -47,7 +47,7 @@
           architecture: x64
 
       - name: 2c. Provision JDK 25 (Host Runtime)
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
           java-version: '25'
           distribution: 'temurin'

.github/workflows/stageReleaseSources.yml

diff --git a/.github/workflows/stageReleaseSources.yml b/.github/workflows/stageReleaseSources.yml
index c9a7d64..85ae93e 100644
--- a/.github/workflows/stageReleaseSources.yml
+++ b/.github/workflows/stageReleaseSources.yml
@@ -28,7 +28,7 @@
 
       # 2. Set up the foundational Java runtime environment
       - name: 2. Provision JDK 25 for Build Execution
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
           java-version: '25'
           distribution: 'temurin'
@@ -128,7 +128,7 @@
 
       # 3. Setup Java Toolchain (11, 17, 21, 25)
       - name: Setup Java Toolchains
-        uses: actions/setup-java@v5.6.0
+        uses: actions/setup-java@v6.0.0
         with:
           java-version: |
             11