chore(deps): Bump up rfcdiff to 1.48 (#558)

Fixes #557

.github/workflows/python-app.yml

@@ -31,10 +31,15 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y software-properties-common gcc
         sudo apt-get install -y python3-cffi python3-brotli libpango-1.0-0 libharfbuzz0b libpangoft2-1.0-0 libcairo2-dev libpangocairo-1.0-0
-        sudo apt-get install -y rfcdiff wdiff gawk
+        sudo apt-get install -y wdiff gawk
         sudo wget https://raw.githubusercontent.com/ietf-tools/idnits-mirror/main/idnits
         sudo cp idnits /bin
         sudo chmod +x /bin/idnits
+        wget https://github.com/ietf-tools/rfcdiff/archive/refs/tags/1.48.tar.gz
+        sudo tar zxf 1.48.tar.gz -C /tmp/
+        sudo mv /tmp/rfcdiff-1.48/rfcdiff /bin/
+        sudo chmod +x /bin/rfcdiff
+        sudo cp idnits /bin
         arch=$(arch | sed s/aarch64/arm64/ | sed s/x86_64/amd64/)
         wget "https://github.com/mmarkdown/mmark/releases/download/v2.2.45/mmark_2.2.45_linux_$arch.tgz"
         sudo tar zxf mmark_*.tgz -C /bin/

Dockerfile

@@ -29,7 +29,6 @@ RUN apt-get update && \
         libpango-1.0-0 \
         libpango1.0-dev \
         wdiff \
-        rfcdiff \
         nodejs \
         gawk \
         bison \
@@ -41,7 +40,6 @@ RUN apt-get update && \
     apt-get clean -y
 
 # Install required fonts
-
 RUN mkdir -p /var/www/.fonts/opentype /tmp/fonts && \
     wget -q -O /tmp/fonts.tar.gz https://github.com/ietf-tools/xml2rfc-fonts/archive/refs/tags/3.22.0.tar.gz && \
     tar zxf /tmp/fonts.tar.gz -C /tmp/fonts && \
@@ -51,6 +49,13 @@ RUN mkdir -p /var/www/.fonts/opentype /tmp/fonts && \
     rm -rf /tmp/fonts.tar.gz /tmp/fonts/ && \
     fc-cache -f
 
+# Install rfcdiff
+RUN wget https://github.com/ietf-tools/rfcdiff/archive/refs/tags/1.48.tar.gz && \
+    tar zxf 1.48.tar.gz -C /tmp/ && \
+    mv /tmp/rfcdiff-1.48/rfcdiff /bin && \
+    chmod +x /bin/rfcdiff && \
+    rm -rf 1.48.tar.gz /tmp/rfcdiff-1.48
+
 # Install bap
 RUN wget https://github.com/ietf-tools/bap/archive/refs/heads/master.zip && \
     unzip -q master.zip -d /tmp/bap && \