Bump the commit hash of the acktools used to generated docs (#1823)

Pull in the code fix in aws-controllers-k8s/test-infra#360 to fix the generation of the Services page

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Author: jljaco

docs/requirements.txt

@@ -1,3 +1,3 @@
-acktools @ git+https://github.com/aws-controllers-k8s/test-infra.git@3fed924a7a4071723b942fc33e5c1e22cec089dd#subdirectory=tools
+acktools @ git+https://github.com/aws-controllers-k8s/test-infra.git@bc1bca9f029abb8fe8ffeafccdac821ccee6af42#subdirectory=tools
 PyGitHub==1.55
 Jinja2==3.0.1