This update for webkit2gtk3 to version 2.18.0 fixes the following issues:
These security issues were fixed:
For other non-security fixes please check the changelog.
{
    "binaries": [
        {
            "libwebkit2gtk3-lang": "2.18.0-2.9.1",
            "libwebkit2gtk-4_0-37": "2.18.0-2.9.1",
            "typelib-1_0-JavaScriptCore-4_0": "2.18.0-2.9.1",
            "typelib-1_0-WebKit2-4_0": "2.18.0-2.9.1",
            "libjavascriptcoregtk-4_0-18": "2.18.0-2.9.1",
            "webkit2gtk-4_0-injected-bundles": "2.18.0-2.9.1"
        }
    ]
}{
    "binaries": [
        {
            "libwebkit2gtk3-lang": "2.18.0-2.9.1",
            "libwebkit2gtk-4_0-37": "2.18.0-2.9.1",
            "typelib-1_0-JavaScriptCore-4_0": "2.18.0-2.9.1",
            "typelib-1_0-WebKit2-4_0": "2.18.0-2.9.1",
            "libjavascriptcoregtk-4_0-18": "2.18.0-2.9.1",
            "webkit2gtk-4_0-injected-bundles": "2.18.0-2.9.1"
        }
    ]
}