SQL Expressions: (Chore) Update GMS (go-mysql-server) dependency (#112289)

- Added gms_pure_go build tags to disable cgo - (cgo was added to GMS since we last updated it)
- Docs note on regex limitations

---------

Co-authored-by: Matheus Macabu <macabu.matheus@gmail.com>

.github/workflows/backend-unit-tests.yml

@@ -68,7 +68,7 @@ jobs:
         run: |
           set -euo pipefail
           readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/shard.sh -N"$SHARD")"
-          CGO_ENABLED=0 go test -short -timeout=30m "${PACKAGES[@]}"
+          CGO_ENABLED=0 go test -tags=gms_pure_go -short -timeout=30m "${PACKAGES[@]}"
 
   grafana-enterprise:
     # Run this workflow for non-PR events (like pushes to `main` or `release-*`) OR for internal PRs (PRs not from forks)
@@ -118,7 +118,7 @@ jobs:
           readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/shard.sh -N"$SHARD")"
           # This tee requires pipefail to be set, otherwise `go test`'s exit code is thrown away.
           # That means having no `-o pipefail` => failing tests => exit code 0, which is wrong.
-          CGO_ENABLED=0 go test -short -timeout=30m "${PACKAGES[@]}"
+          CGO_ENABLED=0 go test -tags=gms_pure_go -short -timeout=30m "${PACKAGES[@]}"
 
   # This is the job that is actually required by rulesets.
   # We need to require EITHER the OSS or the Enterprise job to pass.