fix fortunes not finding connection string

[DeagleGross]

Unblocking issues with resolving a connection string to database for BlazorSSR

Job failed at runtime with exit code 134:
[STDERR] Unhandled exception. System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.
[STDERR] at System.Data.Common.DbConnectionOptions.GetKeyValuePair(String connectionString, Int32 currentPosition, StringBuilder buffer, Boolean useOdbcRules, String& keyname, String& keyvalue)
[STDERR] at System.Data.Common.DbConnectionOptions.ParseInternal(Dictionary2 parsetable, String connectionString, Boolean buildChain, Dictionary2 synonyms, Boolean firstKey)
[STDERR] at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Dictionary`2 synonyms, Boolean useOdbcRules)
[STDERR] at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString(String value)
[STDERR] at Npgsql.NpgsqlConnectionStringBuilder..ctor(String connectionString)
[STDERR] at Npgsql.NpgsqlSlimDataSourceBuilder..ctor(String connectionString)
[STDERR] at BlazorSSR.Database.Db..ctor(AppSettings appSettings) in /tmp/benchmarks-agent/benchmarks-server-1/ti3hiq4s.gqg/src/BenchmarksApps/TechEmpower/BlazorSSR/Database/Db.cs:line 17
[STDERR] at Program.

$(String[] args) in /tmp/benchmarks-agent/benchmarks-server-1/ti3hiq4s.gqg/src/BenchmarksApps/TechEmpower/BlazorSSR/Program.cs:line 24