fix(ci): estate-wide structural CI fixes

- grant secret-scanner reusable its requested job permissions
- drop invalid timeout-minutes on reusable-call jobs
- drop hashFiles() from job-level if: expressions

Author: hyperpolymath

.github/workflows/mirror.yml

@@ -11,6 +11,5 @@ permissions:
 
 jobs:
   mirror:
-    timeout-minutes: 15
     uses: hyperpolymath/standards/.github/workflows/mirror-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236
     secrets: inherit

.github/workflows/release.yml

@@ -154,7 +154,6 @@ jobs:
   provenance:
     name: SLSA Provenance
     needs: [build]
-    timeout-minutes: 20
     permissions:
       actions: read
       id-token: write

.github/workflows/rust-ci.yml

@@ -20,5 +20,4 @@ permissions:
 
 jobs:
   rust-ci:
-    timeout-minutes: 30
     uses: hyperpolymath/standards/.github/workflows/rust-ci-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236

.github/workflows/secret-scanner.yml

@@ -15,6 +15,5 @@ permissions:
 
 jobs:
   scan:
-    timeout-minutes: 15
     uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236
     secrets: inherit