Bump dev.langchain4j:langchain4j-ollama from 1.8.0 to 1.9.1

Bumps [dev.langchain4j:langchain4j-ollama](https://github.com/langchain4j/langchain4j) from 1.8.0 to 1.9.1.
- [Release notes](https://github.com/langchain4j/langchain4j/releases)
- [Commits](langchain4j/langchain4j@1.8.0...1.9.1)

---
updated-dependencies:
- dependency-name: dev.langchain4j:langchain4j-ollama
  dependency-version: 1.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -95,7 +95,7 @@
         <!-- Experimental modules from langchain4j -->
         <version.dev.langchain4j.beta>1.8.0-beta15</version.dev.langchain4j.beta>
         <!-- Base langchain4j version -->
-        <version.dev.langchain4j>1.8.0</version.dev.langchain4j>
+        <version.dev.langchain4j>1.9.1</version.dev.langchain4j>
         <!-- Swagger Parser -->
         <version.io.swagger.parser.v3>2.1.36</version.io.swagger.parser.v3>
         <!-- Checkstyle props -->