Updated the dependency to address sec-vuln

[suraj-simha]

Jira: https://hashicorp.atlassian.net/browse/SECVULN-40739
This PR updates the google.golang.org/grpc version to 1.79.3 to apply the fix for GHSA-p77j-4mvh-x3m3.

Test Results:

make test
==> Checking that code complies with gofmt requirements...
go generate 
CGO_ENABLED=1 go test -tags='' $(go list ./... | grep -v /vendor/ | grep -v /integ)  -timeout=20m -parallel=4
# github.com/hashicorp/vault-plugin-database-oracle.test
ld: warning: duplicate -rpath '/usr/local/lib' ignored
ld: warning: ignoring duplicate libraries: '-lclntsh'
ok      github.com/hashicorp/vault-plugin-database-oracle       236.071s
?       github.com/hashicorp/vault-plugin-database-oracle/plugin        [no test files]

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[ ] Add relevant docs to upstream Vault repository, or sufficient reasoning why docs won’t be added yet
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PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.

• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.

• If applicable, I've documented the impact of any changes to security controls.

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