coco-java: FTBFS with OpenJDK 21 due to unsupported javac source/target level 7

[Vladimir Petko]

The package coco-java ftbfs with default Java 21.
The relevant part of the build log:
---------------
make[1]: Entering directory '/<<PKGBUILDDIR>>'
javac -d . -source 1.7 -target 1.7 Trace.java Scanner.java Tab.java DFA.java ParserGen.java Parser.java Coco.java
warning: [options] bootstrap class path not set in conjunction with -source 7
error: Source option 7 is no longer supported. Use 8 or later.
error: Target option 7 is no longer supported. Use 8 or later.
make[1]: *** [Makefile:2: all] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:40: build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2
---------------

[Vladimir Petko (vpa1977)]

piuparts install/upgrade/purge test (pass)

[Launchpad Janitor (janitor)]

This bug was fixed in the package coco-java - 20110419-4ubuntu1

---------------
coco-java (20110419-4ubuntu1) noble; urgency=medium

  * d/p/debian.patch, d/rules: use java_compat_level variable provided
    by java-common to adjust -source/-target level to the minimum
    required by the default Java (LP: #2052987).

 -- Vladimir Petko <email address hidden> Wed, 22 Nov 2023 10:42:13 +1300