chore: exclude requirements.txt file from renovate-bot (#1594) (#560)

Source-Link: googleapis/synthtool@f58d313
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:f14e3fefe8e361e85752bd9890c8e56f2fe25f1e89cbb9597e4e3c7a429203a3

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,4 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:6566dc8226f20993af18e5a4e7a2b1ba85a292b02dedb6a1634cf10e1b418fa5
+  digest: sha256:f14e3fefe8e361e85752bd9890c8e56f2fe25f1e89cbb9597e4e3c7a429203a3
+

README.md

@@ -22,20 +22,20 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-securitycenter-settings</artifactId>
-  <version>0.6.4</version>
+  <version>0.6.5</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-securitycenter-settings:0.6.4'
+implementation 'com.google.cloud:google-cloud-securitycenter-settings:0.6.5'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter-settings" % "0.6.4"
+libraryDependencies += "com.google.cloud" % "google-cloud-securitycenter-settings" % "0.6.5"
 ```
 
 ## Authentication

renovate.json

@@ -10,6 +10,7 @@
     ":maintainLockFilesDisabled",
     ":autodetectPinVersions"
   ],
+  "ignorePaths": [".kokoro/requirements.txt"],
   "packageRules": [
     {
       "packagePatterns": [