Update Dockerfile to use clang 19 instead

Author: finagolfin

swift-ci/sdks/android/Dockerfile

@@ -18,7 +18,7 @@ ARG SWIFT_TOOLCHAIN_URL=
 RUN apt-get -q update \
     && DEBIAN_FRONTEND=noninteractive apt-get -q install -y \
     build-essential \
-    clang \
+    clang-19 \
     cmake \
     ninja-build \
     python3 \
@@ -55,8 +55,7 @@ ENV SWIFT_SIGNING_KEY=$SWIFT_SIGNING_KEY \
 COPY scripts/install-swift.sh /scripts/install-swift.sh
 RUN chmod ugo+x /scripts/install-swift.sh
 RUN /scripts/install-swift.sh /usr/local/swift
-#ENV PATH="/usr/local/swift/bin:${PATH}"
-ENV PATH="${PATH}:/usr/local/swift/bin"
+ENV PATH="/usr/lib/llvm-19/bin:/usr/local/swift/bin:${PATH}"
 
 ARG ANDROID_NDK_VERSION=