librsvg: 2.61.1 -> 2.61.2, pick upstream patch for libxml 2.15 support (#457296)

diff --git a/rsvg/tests/errors.rs b/rsvg/tests/errors.rs

index 02b134bee..46391fa5d 100644

--- a/rsvg/tests/errors.rs

+++ b/rsvg/tests/errors.rs

@@ -14,15 +14,12 @@ use rsvg::{CairoRenderer, ImplementationLimit, Loader, LoadingError, RenderingEr

 #[ignore]

 #[test]

+#[should_panic]

 fn too_many_elements() {

     let name = "tests/fixtures/errors/bug515-too-many-elements.svgz";

-    assert!(matches!(

-        Loader::new().read_path(name),

-        Err(LoadingError::LimitExceeded(

-            ImplementationLimit::TooManyLoadedElements

-        ))

-    ));

+    // libxml2 might return an error without updating the element count, so just expect any error, not specifically too many elements

+    Loader::new().read_path(name).unwrap();

 }

 fn rendering_instancing_limit(name: &str) {

  lib,

  stdenv,

  fetchurl,

  fetchpatch,

  pkg-config,

  meson,

  ninja,

stdenv.mkDerivation (finalAttrs: {

  pname = "librsvg";

  version = "2.61.1";

  version = "2.61.2";

  outputs = [

    "out"

  src = fetchurl {

    url = "mirror://gnome/sources/librsvg/${lib.versions.majorMinor finalAttrs.version}/librsvg-${finalAttrs.version}.tar.xz";

    hash = "sha256-vBu81BkSCwmNsovqVTNdneJHDU5qn27pcge0EPwVhn0=";

    hash = "sha256-RkTYNiPdYcxEecKzw3Lh2isoFVLryQA1yNGsUC6x3AA=";

  };

  patches = [

    # too_many_elements test fails with libxml 2.15.0,

    # because libxml2 no longer updates the element count

    # before erroring out, which breaks the librsvg limit check.

    #

    # This is okay, because the error is still detected.

    # The error is simply not reported accurately.

    # https://gitlab.gnome.org/GNOME/librsvg/-/issues/1201

    ./expect-any-error-too-many-elements.patch

    (fetchpatch {

      # https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/1149

      # libxml 2.15+ requires adjustments to error handling

      # remove next librsvg release

      url = "https://gitlab.gnome.org/GNOME/librsvg/-/commit/6663df8e9aec323f0c124e97a7c7447a90c67c4a.patch";

      hash = "sha256-+iyRvxVMxSCW0IIizXXheBFytwhBtU4cyJNTBebCOSg=";

    })

  ];

  cargoDeps = rustPlatform.fetchCargoVendor {

    inherit (finalAttrs) src;

    name = "librsvg-deps-${finalAttrs.version}";

    hash = "sha256-3DAFyY7uNB5cP8ry28v12QsFdxHtpr1nyLtzhojBq7c=";

    hash = "sha256-OZspQg9ryDNILUZMiB77vIF0uGCMyVe7blX5BJk102k=";

    dontConfigure = true;

  };