chore(deps): update dependency org.slf4j:slf4j-api to v2

Author: renovate[bot]

deeplearning4j-cuda.json

@@ -4,7 +4,7 @@
     { "name": "v", "value": "1.0.0-beta6" },
     { "name": "v-renovate-hint", "value": "update: package=org.nd4j:nd4j-api" },
     { "name": "cuda", "value": "10.2" },
-    { "name": "slf4j", "value": "1.7.36" },
+    { "name": "slf4j", "value": "2.0.8" },
     { "name": "slf4j-renovate-hint", "value": "update: package=org.slf4j:slf4j-api" },
     { "name": "freemarker", "value": "2.3.32" },
     { "name": "freemarker-renovate-hint", "value": "update: package=org.freemarker:freemarker" }

deeplearning4j.json

@@ -3,7 +3,7 @@
   "properties": [
     { "name": "v", "value": "1.0.0-beta6" },
     { "name": "v-renovate-hint", "value": "update: package=org.nd4j:nd4j-api" },
-    { "name": "slf4j", "value": "1.7.36" },
+    { "name": "slf4j", "value": "2.0.8" },
     { "name": "slf4j-renovate-hint", "value": "update: package=org.slf4j:slf4j-api" },
     { "name": "freemarker", "value": "2.3.32" },
     { "name": "freemarker-renovate-hint", "value": "update: package=org.freemarker:freemarker" }