Remove attributes_for from background migration specs

With https://gitlab.com/gitlab-org/gitlab/-/merge_requests/52182 we
banned `attributes_for` in migration specs. This refactors one of the
offending migrations.

ee/spec/migrations/remove_duplicated_cs_findings_without_vulnerability_id_spec.rb

@@ -99,7 +99,8 @@ RSpec.describe RemoveDuplicatedCsFindingsWithoutVulnerabilityId, :migration do
   end
 
   def finding_params(primary_identifier_id, project_id)
-    attrs = attributes_for(:vulnerabilities_finding) # rubocop: disable RSpec/FactoriesInMigrationSpecs
+    uuid = SecureRandom.uuid
+
     {
       severity: 0,
       confidence: 5,
@@ -107,15 +108,35 @@ RSpec.describe RemoveDuplicatedCsFindingsWithoutVulnerabilityId, :migration do
       project_id: project_id,
       scanner_id: 6,
       primary_identifier_id: primary_identifier_id,
-      project_fingerprint: attrs[:project_fingerprint],
+      project_fingerprint: SecureRandom.hex(20),
       location_fingerprint: Digest::SHA1.hexdigest(SecureRandom.hex(10)),
-      uuid: SecureRandom.uuid,
-      name: attrs[:name],
+      uuid: uuid,
+      name: "Vulnerability Finding #{uuid}",
       metadata_version: '1.3',
-      raw_metadata: attrs[:raw_metadata]
+      raw_metadata: raw_metadata
     }
   end
 
+  def raw_metadata
+    { "description" => "The cipher does not provide data integrity update 1",
+     "message" => "The cipher does not provide data integrity",
+     "cve" => "818bf5dacb291e15d9e6dc3c5ac32178:CIPHER",
+     "solution" => "GCM mode introduces an HMAC into the resulting encrypted data, providing integrity of the result.",
+     "location" => { "file" => "maven/src/main/java/com/gitlab/security_products/tests/App.java", "start_line" => 29, "end_line" => 29, "class" => "com.gitlab.security_products.tests.App", "method" => "insecureCypher" },
+     "links" => [{ "name" => "Cipher does not check for integrity first?", "url" => "https://crypto.stackexchange.com/questions/31428/pbewithmd5anddes-cipher-does-not-check-for-integrity-first" }],
+     "assets" => [{ "type" => "postman", "name" => "Test Postman Collection", "url" => "http://localhost/test.collection" }],
+     "evidence" =>
+      { "summary" => "Credit card detected",
+       "request" => { "headers" => [{ "name" => "Accept", "value" => "*/*" }], "method" => "GET", "url" => "http://goat:8080/WebGoat/logout", "body" => nil },
+       "response" => { "headers" => [{ "name" => "Content-Length", "value" => "0" }], "reason_phrase" => "OK", "status_code" => 200, "body" => nil },
+       "source" => { "id" => "assert:Response Body Analysis", "name" => "Response Body Analysis", "url" => "htpp://hostname/documentation" },
+       "supporting_messages" =>
+        [{ "name" => "Origional", "request" => { "headers" => [{ "name" => "Accept", "value" => "*/*" }], "method" => "GET", "url" => "http://goat:8080/WebGoat/logout", "body" => "" } },
+         { "name" => "Recorded",
+          "request" => { "headers" => [{ "name" => "Accept", "value" => "*/*" }], "method" => "GET", "url" => "http://goat:8080/WebGoat/logout", "body" => "" },
+          "response" => { "headers" => [{ "name" => "Content-Length", "value" => "0" }], "reason_phrase" => "OK", "status_code" => 200, "body" => "" } }] } }
+  end
+
   def create_identifier(number_of)
     (1..number_of).each do |identifier_id|
       identifiers.create!(id: identifier_id,