Roll DevTools (#473)

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Updates DevTools in customer testing to roll: flutter/devtools#9459
This unblocks: flutter/flutter#173862

> [!IMPORTANT]
> This repository is a testing suite that contains references to tests (in the `registry` directory) that are run with every commit to Flutter
> to verify that no breaking changes have been introduced (in the "customer_testing" shards). Your merged PR is _not_ automatically run in the
> Flutter CI tree.
>
> After merging this PR, you must send another PR to flutter/flutter updating `dev/customer_testing/tests.version` in that repo with the latest git commit SHA of the flutter/test repo.
>
> See <flutter/flutter#162048> for details.

Author: loic-sharma

registry/flutter_devtools.test

@@ -7,7 +7,7 @@ fetch=git -c core.longPaths=true clone https://github.com/flutter/devtools.git t
 # NOTE: this commit hash should also match the hash in flutter_devtools_analysis.test.
 # The analysis and testing for DevTools have been split into two different
 # registry to speed up performance.
-fetch=git -c core.longPaths=true -C tests checkout 51d23c09e5992cc33dcda3ff20863de00c4c516c
+fetch=git -c core.longPaths=true -C tests checkout 9701f74f2159e15045ead836e4336479a05510d5
 
 setup.linux=./tool/flutter_customer_tests/setup.sh >> output.txt
 

registry/flutter_devtools_analysis.test

@@ -7,7 +7,7 @@ fetch=git -c core.longPaths=true clone https://github.com/flutter/devtools.git t
 # NOTE: this commit hash should also match the hash in flutter_devtools.test.
 # The analysis and testing for DevTools have been split into two different
 # registry to speed up performance.
-fetch=git -c core.longPaths=true -C tests checkout 51d23c09e5992cc33dcda3ff20863de00c4c516c
+fetch=git -c core.longPaths=true -C tests checkout 9701f74f2159e15045ead836e4336479a05510d5
 
 # Mock generation required. Otherwise the test code will show analysis errors.
 setup.linux=./tool/flutter_customer_tests/setup.sh >> output.txt