Upgrade Apache http client to 5.1.2
<antlr4.version>4.5</antlr4.version>
<apache.httpclient.version>4.5.13</apache.httpclient.version>
<apache.httpcore.version>4.4.13</apache.httpcore.version>
- <apache.httpclient5.version>5.1.1</apache.httpclient5.version>
+ <apache.httpclient5.version>5.1.2</apache.httpclient5.version>
<asm.version>9.2</asm.version>
<!-- Athenz dependencies. Make sure these dependencies match those in Vespa's internal repositories -->
