update pg search sanitize list (#31083)

Signed-off-by: Vladimir Kobzev <vkobzev@bol.com>

.changeset/nice-readers-judge.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-search-backend-module-pg': patch
+---
+
+Added the < character to the query filter regexp

plugins/search-backend-module-pg/src/PgSearchEngine/PgSearchEngine.test.ts

@@ -133,7 +133,7 @@ describe('PgSearchEngine', () => {
     it('should sanitize query term', async () => {
       const actualTranslatedQuery = searchEngine.translator(
         {
-          term: 'H&e|l!l*o W\0o(r)l:d',
+          term: 'H&e|l!l*o < W\0o(r)l:d',
           pageCursor: '',
         },
         { highlightOptions },

plugins/search-backend-module-pg/src/PgSearchEngine/PgSearchEngine.ts

@@ -196,7 +196,7 @@ export class PgSearchEngine implements SearchEngine {
       pgQuery: {
         pgTerm: query.term
           .split(/\s/)
-          .map(p => p.replace(/[\0()|&:*!]/g, '').trim())
+          .map(p => p.replace(/[\0()|&:*!<]/g, '').trim())
           .filter(p => p !== '')
           .map(p => `(${JSON.stringify(p)} | ${JSON.stringify(p)}:*)`)
           .join('&'),