Bump elasticsearch from 15.3.1 to 15.4.1

Bumps [elasticsearch](https://github.com/elastic/elasticsearch-js) from 15.3.1 to 15.4.1.
- [Release notes](https://github.com/elastic/elasticsearch-js/releases)
- [Changelog](https://github.com/elastic/elasticsearch-js/blob/master/docs/changelog.asciidoc)
- [Commits](elastic/elasticsearch-js@v15.3.1...v15.4.1)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -30,7 +30,7 @@
     "csw-client": "^0.18.2",
     "debug": "^4.1.1",
     "dotenv": "^6.2.0",
-    "elasticsearch": "^15.3.1",
+    "elasticsearch": "^15.4.1",
     "express": "^4.16.4",
     "express-session": "^1.15.6",
     "file-type": "^10.7.1",

yarn.lock

@@ -1975,16 +1975,7 @@ chalk@^1.0.0:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0, chalk@^2.4.1:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
-  integrity sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==
-  dependencies:
-    ansi-styles "^3.2.1"
-    escape-string-regexp "^1.0.5"
-    supports-color "^5.3.0"
-
-chalk@^2.4.2:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0, chalk@^2.4.1, chalk@^2.4.2:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
@@ -2694,10 +2685,10 @@ ee-first@1.1.1:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
-elasticsearch@^15.3.1:
-  version "15.3.1"
-  resolved "https://registry.yarnpkg.com/elasticsearch/-/elasticsearch-15.3.1.tgz#5d826606a4b7be4acd59f102716cf03ed142b2bf"
-  integrity sha512-+fdf2yRlcJChMYq+sw+RyhXidzjdILq+zV25aK/bn8k4Elwa6Stlbua0I2nM7swVeTBFxTpsMZIOolWRcx59hA==
+elasticsearch@^15.4.1:
+  version "15.4.1"
+  resolved "https://registry.yarnpkg.com/elasticsearch/-/elasticsearch-15.4.1.tgz#28b54de22fea74003e57395e035926fe7b63b8dd"
+  integrity sha512-IL46Sv9krCKtpvlI37/vQVQrWx6QeT1OJhfWW6L3fIXzR1Vv5utO+DHYz8AosUI6vlkxShoq+y6sUIBhTF1OIg==
   dependencies:
     agentkeepalive "^3.4.1"
     chalk "^1.0.0"