firefox: update to meet upstream ppc64el patch.

helpers/DATA/firefox/patch_changes/workaround_115_ppc64el_build.patch

-diff --git a/debian/control.in b/debian/control.in
-index 1955e51..c431192 100644
---- a/debian/control.in
-+++ b/debian/control.in
-@@ -38,9 +38,9 @@ Build-Depends: cdbs,
- 	xvfb,
- 	python3 (>= 3.7),
- 	libffi-dev (>= 3.0.9) [powerpc ppc64el s390x],
--	clang-15 [!ppc64el] | clang-14 | clang-13 | clang-12 | clang-10,
--	libclang-15-dev [!ppc64el] | libclang-14-dev | libclang-13-dev | libclang-12-dev | libclang-10-dev,
--	llvm-15-dev [!ppc64el] | llvm-14-dev | llvm-13-dev | llvm-12-dev | llvm-10-dev,
-+	clang-15 [!ppc64el] | clang-14 [!ppc64el] | clang-13 [!ppc64el] | clang-12 | clang-10,
-+	libclang-15-dev [!ppc64el] | libclang-14-dev [!ppc64el] | libclang-13-dev [!ppc64el] | libclang-12-dev | libclang-10-dev,
-+	llvm-15-dev [!ppc64el] | llvm-14-dev [!ppc64el] | llvm-13-dev [!ppc64el] | llvm-12-dev | llvm-10-dev,
- 	cargo (>= 0.67),
- 	rustc (>= 1.66.0),
- 	nodejs (>= 12.22.12)