Update update-cocoa.sh (#3068)

Author: buenaflor

flutter/scripts/update-cocoa.sh

@@ -31,7 +31,7 @@ set_podspec_version() {
 set_spm_version() {
   local file='sentry_flutter/Package.swift'
   local content=$(cat $file)
-  regex="(url: *['\"]https://github.com/getsentry/sentry-cocoa['\"], *from: *)['\"]([0-9\.]+(-[a-z0-9\.]+)?)['\"]"
+  regex="(url: *['\"]https://github.com/getsentry/sentry-cocoa['\"], *exact: *)['\"]([0-9\.]+(-[a-z0-9\.]+)?)['\"]"
   if ! [[ $content =~ $regex ]]; then
     echo "Failed to find the plugin version in $file"
     exit 1