Update vips versions in CircleCI

.circleci/Dockerfile

@@ -20,7 +20,6 @@ RUN apt-get -qq update \
     libjpeg-dev \
     libpng-dev \
     libwebp-dev \
-    libgif-dev \
     librsvg2-dev \
     libexif-dev \
     liblcms2-dev \
@@ -36,7 +35,7 @@ RUN \
   mkdir /root/vips \
   && cd /root/vips \
   && curl -s -S -L -o vips_releases.json "https://api.github.com/repos/libvips/libvips/releases" \
-  && for VIPS_VERSION in "8.9" "8.10" "8.11"; do \
+  && for VIPS_VERSION in "8.10" "8.11" "8.12"; do \
     mkdir $VIPS_VERSION \
     && export VIPS_RELEASE=$(grep -m 1 "\"tag_name\": \"v$VIPS_VERSION." vips_releases.json | sed -E 's/.*"v([^"]+)".*/\1/') \
     && echo "Building Vips $VIPS_RELEASE as $VIPS_VERSION" \

.circleci/config.yml

@@ -17,7 +17,7 @@ workflows:
           matrix:
             parameters:
               go_version: ["1.17", "1.16"] # Go 1.15 doesn't support io/fs
-              vips_version: ["8.11", "8.10", "8.9"]
+              vips_version: ["8.12", "8.11", "8.10"]
 
   release:
     jobs: