Update github actions runner checksum to match version (iree-org#11730)

Checksum obtained from the release page:
https://github.com/actions/runner/releases/tag/v2.300.2

I forgot to update this in iree-org#11697
Part of iree-org#11554

build_tools/github_actions/runner/gcp/create_templates.sh

@@ -58,7 +58,7 @@ if (( TESTING!=0 )); then
 fi
 GITHUB_RUNNER_SCOPE=iree-org
 GITHUB_RUNNER_VERSION="2.300.2"
-GITHUB_RUNNER_ARCHIVE_DIGEST="147c14700c6cb997421b9a239c012197f11ea9854cd901ee88ead6fe73a72c74"
+GITHUB_RUNNER_ARCHIVE_DIGEST="ed5bf2799c1ef7b2dd607df66e6b676dff8c44fb359c6fedc9ebf7db53339f0c"
 GITHUB_TOKEN_PROXY_URL="https://ght-proxy-zbhz5clunq-ue.a.run.app"
 
 if (( TESTING_SELF_DELETER==1 )); then