upgrade bats to v1.10

Ref exercism/awk-test-runner#28

Dockerfile

@@ -2,26 +2,19 @@ FROM ubuntu:24.04
 
 # Ubuntu 24.04 ships with bash version 5.2
 # https://hub.docker.com/layers/library/ubuntu/24.04/images/sha256-3963c438d67a34318a3672faa6debd1dfff48e5d52de54305988b932c61514ca?context=explore
-# Specifically use bats 1.5.0
-# Remove git when we're done with it.
+# 24.04 provides bats v1.10.0
 # Test runner needs jq.
 # Other commands to add to environment, might be used by students
 #   - bc
 #   - GNU awk (Ubuntu 20.04 ships with mawk)
 # Tools commonly used by students that will already be installed include:
 #   - sed, tr, ...
 
-RUN apt-get update && \
-    apt-get install -y git jq bc gawk && \
-    git clone https://github.com/bats-core/bats-core && \
-    cd bats-core && \
-    git checkout v1.5.0 && \
-    bash ./install.sh /usr/local && \
-    cd && \
-    apt-get remove -y git && \
-    apt-get purge --auto-remove -y && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/* ./bats-core
+RUN apt-get update                      && \
+    apt-get install -y bats jq bc gawk  && \
+    apt-get purge --auto-remove -y      && \
+    apt-get clean                       && \
+    rm -rf /var/lib/apt/lists/*
 
 COPY . /opt/test-runner
 WORKDIR /opt/test-runner