[Github] Install sccache from apt repo in CI container (#137491)

This patch installs sccache using apt-get in the CI container build
process rather than manually downloading it from github releases. This
makes things quite a bit simpler and means we are not manually handling
things like hash/signature verification. This is only possible now that
we are using ubuntu 24.04 by default.

Author: boomanaiden154

.github/workflows/containers/github-action-ci/Dockerfile

@@ -63,20 +63,11 @@ RUN apt-get update && \
     python3-pip \
     ccache \
     file \
-    tzdata && \
+    tzdata \
+    sccache && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
-# Install sccache as it is needed by most of the project test workflows and
-# cannot be installed by the ccache action when executing as a non-root user.
-# TODO(boomanaiden154): This should be switched to being installed with apt
-# once we bump to Ubuntu 24.04.
-RUN curl -L 'https://github.com/mozilla/sccache/releases/download/v0.7.6/sccache-v0.7.6-x86_64-unknown-linux-musl.tar.gz' > /tmp/sccache.tar.gz && \
-    echo "2902a5e44c3342132f07b62e70cca75d9b23252922faf3b924f449808cc1ae58 /tmp/sccache.tar.gz" | sha256sum -c && \
-    tar xzf /tmp/sccache.tar.gz -O --wildcards '*/sccache' > '/usr/local/bin/sccache' && \
-    rm /tmp/sccache.tar.gz && \
-    chmod +x /usr/local/bin/sccache
-
 ENV LLVM_SYSROOT=$LLVM_SYSROOT
 ENV PATH=${LLVM_SYSROOT}/bin:${PATH}