Updating Blazer to 2.6.1 (#17390)

Prior to this commit, we were seeing the following:

```console
❯ bundle exec bundle-audit check --update
Updating ruby-advisory-db ...
From https://github.com/rubysec/ruby-advisory-db
 * branch            master     -> FETCH_HEAD
Already up to date.
Updated ruby-advisory-db
ruby-advisory-db:
  advisories:	562 advisories
  last updated:	2022-04-20 14:56:09 -0700
  commit:	1cca55530261d16f4cd16691c1ebbae86c91c28b
Name: blazer
Version: 2.5.0
CVE: CVE-2022-29498
Criticality: Unknown
URL: https://github.com/ankane/blazer/issues/392
Title: SQL injection for certain queries with variables
Solution: upgrade to >= 2.6.0

Vulnerabilities found!
```

Blocking forem/forem#17382

Gemfile

@@ -17,7 +17,7 @@ gem "addressable", "~> 2.8" # A replacement for the URI implementation that is p
 gem "ahoy_email", "~> 2.1.2" # Email analytics for Rails
 gem "ahoy_matey", "~> 4.0" # Tracking analytics for Rails
 gem "ancestry", "~> 4.1" # Ancestry allows the records of a ActiveRecord model to be organized in a tree structure
-gem "blazer", "~> 2.5.0" # Allows admins to query data
+gem "blazer", "~> 2.6" # Allows admins to query data
 gem "bootsnap", ">= 1.1.0", require: false # Boot large ruby/rails apps faster
 gem "carrierwave", "~> 2.2" # Upload files in your Ruby applications, map them to a range of ORMs, store them on different backends
 gem "carrierwave-bombshelter", "~> 0.2" # Protect your carrierwave from image bombs

Gemfile.lock

@@ -116,7 +116,7 @@ GEM
       parser (>= 2.4)
       smart_properties
     bindex (0.8.1)
-    blazer (2.5.0)
+    blazer (2.6.1)
       activerecord (>= 5)
       chartkick (>= 3.2)
       railties (>= 5)
@@ -157,7 +157,7 @@ GEM
       activesupport (>= 3.2.0)
       carrierwave
       fastimage
-    chartkick (4.1.2)
+    chartkick (4.1.3)
     childprocess (4.1.0)
     cloudinary (1.23.0)
       aws_cf_signer
@@ -954,7 +954,7 @@ DEPENDENCIES
   amazing_print (~> 1.4)
   ancestry (~> 4.1)
   better_errors (~> 2.9)
-  blazer (~> 2.5.0)
+  blazer (~> 2.6)
   bootsnap (>= 1.1.0)
   brakeman (~> 5.2)
   bullet (~> 7.0)