Revert "DEV: another attempt upgrading mini_racer (#28763)" (#28769)

This reverts commit 5c0c053b11.

This still segfaults, but not as frequently as before, we will keep this
for a few more hours and then revert

Gemfile

@@ -99,7 +99,7 @@ gem "sidekiq"
 gem "mini_scheduler"
 
 gem "execjs", require: false
-gem "mini_racer", "0.17.0.pre"
+gem "mini_racer"
 
 gem "highline", require: false
 

Gemfile.lock

@@ -205,10 +205,10 @@ GEM
       base64
     kgio (2.11.4)
     language_server-protocol (3.17.0.3)
-    libv8-node (22.7.0.2-aarch64-linux)
-    libv8-node (22.7.0.2-arm64-darwin)
-    libv8-node (22.7.0.2-x86_64-darwin)
-    libv8-node (22.7.0.2-x86_64-linux)
+    libv8-node (18.19.0.0-aarch64-linux)
+    libv8-node (18.19.0.0-arm64-darwin)
+    libv8-node (18.19.0.0-x86_64-darwin)
+    libv8-node (18.19.0.0-x86_64-linux)
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -240,8 +240,8 @@ GEM
       mini_racer (>= 0.6.3)
     method_source (1.1.0)
     mini_mime (1.1.5)
-    mini_racer (0.17.0.pre)
-      libv8-node (~> 22.7.0.2)
+    mini_racer (0.14.1)
+      libv8-node (~> 18.19.0.0)
     mini_scheduler (0.17.0)
       sidekiq (>= 4.2.3, < 7.0)
     mini_sql (1.6.0)
@@ -652,7 +652,7 @@ DEPENDENCIES
   message_bus
   messageformat-wrapper
   mini_mime
-  mini_racer (= 0.17.0.pre)
+  mini_racer
   mini_scheduler
   mini_sql
   mini_suffix