gnu: doxygen: Update to 1.9.5.

* gnu/packages/documentation.scm (doxygen): Update to 1.9.5.
[source](patches): Remove.
* gnu/packages/patches/doxygen-support-gcc-12.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.

gnu/packages/documentation.scm

@@ -187,7 +187,7 @@ markup) can be customized and extended by the user.")
 (define-public doxygen
   (package
     (name "doxygen")
-    (version "1.9.4")
+    (version "1.9.5")
     (home-page "https://www.doxygen.nl/")
     (source (origin
               (method url-fetch)
@@ -198,9 +198,7 @@ markup) can be customized and extended by the user.")
                                         ".src.tar.gz")))
               (sha256
                (base32
-                "0dqzgci82z950pzg6cpxvvqwybi2031flml3pj47hayhq3c9qpm1"))
-              ;; Remove with next release.
-              (patches (search-patches "doxygen-support-gcc-12.patch"))))
+                "1v1f9cp5lyymg7xmw0ldnzi7ql8agbaqam1xdyljk0lrbnrm9d2m"))))
     (build-system cmake-build-system)
     (native-inputs
      (list bison