🛠️ Fix Qodana GitHub action configuration

Otherwise, Qodana Inspection fails with:

> /opt/hostedtoolcache/qodana/2024.1.5/x64/qodana scan --cache-dir /home/runner/work/_temp/qodana/caches --results-dir /home/runner/work/_temp/qodana/results --skip-pull  --commit 6cad619
> fatal: Could not parse object '6cad619456919661c18f21ae8479dce247be9f7f'.
>
> !  Could not reset git repository, no --commit option will be applied: exit status 128
> time="2024-09-28T19:20:08Z" level=fatal msg="Failed to prepare diff run nothing to compare between 6cad619 and 2b80ff6"
> ✗  Qodana exited with code 1
>
> !  Check ./logs/ in the results directory for more information
> Error: qodana scan failed with exit code 1

The version upgrade was suggested here:
JetBrains/intellij-platform-gradle-plugin#1736.

.github/workflows/build.yml

@@ -159,13 +159,27 @@ jobs:
       # Check out the current repository
       - name: Fetch Sources
         uses: actions/checkout@v4
+        # See: https://github.com/marketplace/actions/qodana-scan#basic-configuration
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 0
+
+      # Qodana Community for JVM 2024.2.2 RC complains about:
+      # > java.nio.file.NoSuchFileException: /opt/idea/plugins/sh/lib/sh.jar
+      # ...and...
+      # > Cannot find a Java installation on your machine matching this tasks requirements:
+      # > {languageVersion=11, vendor=any, implementation=vendor-specific} for LINUX on x86_64.
+      # (no idea why it's even used with `JetBrains/[email protected]`, a cache issue?)
+      # (and the error doesn't even go away!)
 
       # Set up Java environment for the next steps
+      # Qodana needs a modern Java, otherwise it'll fail with:
+      # > Dependency requires at least JVM runtime version 17. This build uses a Java 11 JVM.
       - name: Setup Java
         uses: actions/setup-java@v4
         with:
           distribution: zulu
-          java-version: 17
+          java-version: 21
 
       # Run Qodana inspections
       - name: Qodana - Code Inspection

qodana.yml

@@ -3,7 +3,7 @@
 
 version: 1.0
 linter: jetbrains/qodana-jvm-community:latest
-projectJDK: "17"
+projectJDK: "21"
 profile:
   name: qodana.recommended
 exclude: