ci: Enhance caching for pip, BerkeleyDB, and build dependencies in CI…

… workflow

.github/workflows/ci-coverage-ubuntu-full-qt-tests.yml

@@ -12,6 +12,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Cache pip
+        id: cache-pip
         uses: actions/cache@v3
         with:
           path: |
@@ -21,13 +22,15 @@ jobs:
           restore-keys: v1-${{ runner.os }}-pip-
 
       - name: Cache BerkeleyDB
+        id: cache-db4
         uses: actions/cache@v3
         with:
           path: db4
           key: v1-${{ runner.os }}-db4-${{ hashFiles('contrib/install_db4.sh') }}
           restore-keys: v1-${{ runner.os }}-db4-
 
       - name: Cache depends build
+        id: cache-depends
         uses: actions/cache@v3
         with:
           path: |
@@ -52,16 +55,17 @@ jobs:
           libqrencode-dev
 
       - name: Install Python Packages
+        if: steps.cache-pip.outputs.cache-hit != 'true'
         run: |
           pip3 install pypandoc digibyte_scrypt
 
       - name: Install BerkeleyDB
+        if: steps.cache-db4.outputs.cache-hit != 'true'
         run: |
-          if [ ! -d "db4" ]; then
-            ./contrib/install_db4.sh `pwd` --enable-cxx
-          fi
+          ./contrib/install_db4.sh `pwd` --enable-cxx
 
       - name: Build Dependencies
+        if: steps.cache-depends.outputs.cache-hit != 'true'
         run: |
           cd depends
           make -j3 HOST=x86_64-linux-gnu