Fix: Update brew (CI Failure) (TryGhost#1108)

* Update brew (build_against_electron.sh)

* Update brew (build_against_node.sh)

Author: kewde

scripts/build_against_electron.sh

@@ -45,6 +45,7 @@ make clean
 # now test building against shared sqlite
 export NODE_SQLITE3_JSON1=no
 if [[ $(uname -s) == 'Darwin' ]]; then
+    brew update
     brew install sqlite
     npm install --build-from-source --sqlite=$(brew --prefix) --clang=1 $GYP_ARGS
 else

scripts/build_against_node.sh

@@ -25,6 +25,7 @@ publish
 echo "building from source to test against external libsqlite3"
 export NODE_SQLITE3_JSON1=no
 if [[ $(uname -s) == 'Darwin' ]]; then
+    brew update
     brew install sqlite
     npm install --build-from-source --sqlite=$(brew --prefix) --clang=1
 else