fix: Adapt to recent changes in JDK download URL response

Parse the JDK redirect URL for a case insensitive redirect location

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/307 shows the response as:

> location: /en-US/docs/Learn/JavaScript/Client-side_web_APIs/Fetching_data
> content-type: text/plain; charset=utf-8
> date: Fri, 19 Jul 2024 12:57:17 GMT

Previously, the response must have used "Location:" rather than "location:"

adoptium-get-jdk-link.sh

@@ -74,17 +74,17 @@ for ARCH in ${ARCHS}; do
     URL="https://api.adoptium.net/v3/binary/version/jdk-${ENCODED_ARCHIVE_DIRECTORY}/${OS_TYPE}/${ARCH}/jdk/hotspot/normal/eclipse?project=jdk"
 
     if ! RESPONSE=$(curl --fail --silent --show-error --retry 5 --retry-connrefused --head "${URL}"); then
-        echo "Error: Failed to fetch the URL for architecture ${ARCH}. Exiting with status 1." >&2
+        echo "Error: Failed to fetch the URL for architecture ${ARCH} for ${URL}. Exiting with status 1." >&2
         echo "Response: ${RESPONSE}" >&2
         exit 1
     fi
 
     # Extract the redirect URL from the HTTP response
-    REDIRECTED_URL=$(echo "${RESPONSE}" | grep Location | awk '{print $2}' | tr -d '\r')
+    REDIRECTED_URL=$(echo "${RESPONSE}" | grep -i location | awk '{print $2}' | tr -d '\r')
 
     # If no redirect URL was found, exit the script with an error message
     if [ -z "${REDIRECTED_URL}" ]; then
-        echo "Error: No redirect URL found for architecture ${ARCH}. Exiting with status 1." >&2
+        echo "Error: No redirect URL found for architecture ${ARCH} for ${URL}. Exiting with status 1." >&2
         echo "Response: ${RESPONSE}" >&2
         exit 1
     fi