A few bugfixes since 8.14.1:

• use a private fontmap in vips_text() [jcupitt]
• increase sanity checks on TIFF tile dimensions [lovell]
• ensure compatibility with libheif > 1.14.2 [kleisauke]
• minor doc fixes [jcupitt]
• sanitise dimensions in JPEG-compressed TIFF images [lovell]
• fix target pnm write [ewelot]
• dedupe FITS header write [ewelot]
• fix strip parameter in webpsave [jcupitt]
• earlier abort of webpsave on kill [dloebl]
• fix thumbnail of CMYK images with an embedded ICC profile [kleisauke]
• fix ICC handling of RGB images with a monochrome profile [kleisauke]
• ensure ICC transforms keep all precision [kleisauke]
• fix openslideload associated=XXX load [jcupitt]
• fix compatibility with MSVC [SpaceIm]

Note to myself: after this PR lands, a release tarball will be created with:

$ meson setup release_build -Ddoxygen=true -Dgtk_doc=true -Dvapi=true
$ meson compile -Crelease_build
$ meson dist -Crelease_build
$ ls release_build/meson-dist
vips-8.14.2.tar.xz  vips-8.14.2.tar.xz.sha256sum

@jcupitt What's the preferred way of tagging a release? I usually do this through GitHub's web interface, but sometimes people prefer to do it via Git CLI.