chore(deps): bump cloud.google.com/go/spanner (#874)

Bumps [cloud.google.com/go/spanner](https://github.com/googleapis/google-cloud-go) from 1.47.0 to 1.48.0.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/CHANGES.md)
- [Commits](googleapis/google-cloud-go@spanner/v1.47.0...spanner/v1.48.0)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/spanner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

acceptance-tests/apps/spannerapp/go.mod

@@ -3,7 +3,7 @@ module spannerapp
 go 1.21
 
 require (
-	cloud.google.com/go/spanner v1.47.0
+	cloud.google.com/go/spanner v1.48.0
 	github.com/cloudfoundry-community/go-cfenv v1.18.0
 	google.golang.org/api v0.138.0
 )

acceptance-tests/apps/spannerapp/go.sum

@@ -10,8 +10,8 @@ cloud.google.com/go/iam v1.1.1 h1:lW7fzj15aVIXYHREOqjRBV9PsH0Z6u8Y46a1YGvQP4Y=
 cloud.google.com/go/iam v1.1.1/go.mod h1:A5avdyVL2tCppe4unb0951eI9jreack+RJ0/d+KUZOU=
 cloud.google.com/go/longrunning v0.5.1 h1:Fr7TXftcqTudoyRJa113hyaqlGdiBQkp0Gq7tErFDWI=
 cloud.google.com/go/longrunning v0.5.1/go.mod h1:spvimkwdz6SPWKEt/XBij79E9fiTkHSQl/fRUUQJYJc=
-cloud.google.com/go/spanner v1.47.0 h1:aqiMP8dhsEXgn9K5EZBWxPG7dxIiyM2VaikqeU4iteg=
-cloud.google.com/go/spanner v1.47.0/go.mod h1:IXsJwVW2j4UKs0eYDqodab6HgGuA1bViSqW4uH9lfUI=
+cloud.google.com/go/spanner v1.48.0 h1:lh3Xqe2G+/bhJ1O3JxYt4ahYXOz/wPH4D2Wrx2vFoNI=
+cloud.google.com/go/spanner v1.48.0/go.mod h1:eGj9mQGK8+hkgSVbHNQ06pQ4oS+cyc4tXXd6Dif1KoM=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=