librsvg ftbfs in the jammy release pocket

as seen in a test rebuild, this package fails to build in the jammy release pocket (note the log behind the link might go away):

https://launchpadlibrarian.net/604216345/buildlog_ubuntu-jammy-i386.librsvg_2.52.5+dfsg-3_BUILDING.txt.gz

test url_resolver::tests::allows_relative ... ok

failures:

---- transform::tests::parses_transform_list stdout ----
thread 'transform::tests::parses_transform_list' panicked at 'assertion failed: t1.y0.approx_eq(t2.y0, (epsilon, 1))', src/transform.rs:716:9

---- transform::tests::parses_valid_transform stdout ----
thread 'transform::tests::parses_valid_transform' panicked at 'assertion failed: t1.y0.approx_eq(t2.y0, (epsilon, 1))', src/transform.rs:716:9

failures:
    transform::tests::parses_transform_list
    transform::tests::parses_valid_transform

test result: FAILED. 254 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s

error: test failed, to rerun pass '--lib'
make[5]: *** [Makefile:1537: check-local] Error 101